{"title":"Rigid Coupling","description":"","products":[{"product_id":"grooved-rigid-coupling-1-inch","title":"1\" Grooved Rigid Coupling – Ductile Iron, UL\/FM Approved","description":"\u003ch2\u003e🔩 1\" Grooved Rigid Coupling – UL\/FM Approved for Fire Protection \u0026amp; Mechanical Systems\u003c\/h2\u003e\n\n\u003cp\u003eThis \u003cstrong\u003e1-inch Grooved Rigid Coupling\u003c\/strong\u003e is engineered for secure, immovable pipe connections in \u003cstrong\u003efire protection, HVAC, and industrial piping systems\u003c\/strong\u003e. Constructed from \u003cstrong\u003eductile iron\u003c\/strong\u003e with a corrosion-resistant orange enamel finish, it ensures a robust, leak-free joint that maintains system integrity under pressure.\u003c\/p\u003e\n\n\u003cp\u003eFeaturing a \u003cstrong\u003epre-lubricated Grade E EPDM gasket\u003c\/strong\u003e, this coupling provides a tight seal suitable for a range of applications. It complies with \u003cstrong\u003eASTM A536\u003c\/strong\u003e standards and is both \u003cstrong\u003eUL Listed and FM Approved\u003c\/strong\u003e, meeting stringent safety and performance criteria.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e⚙️ Key Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 1\" nominal pipe size (NPS)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Ductile iron conforming to ASTM A536\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Non-lead orange enamel paint\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGasket:\u003c\/strong\u003e Pre-lubricated Grade E EPDM (Type A)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e UL Listed, FM Approved\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDesign:\u003c\/strong\u003e Rigid coupling for fixed, non-deflecting joints\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e📐 Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003ePipe OD Compatibility: 1.315\" (Standard for 1\" Schedule 40 steel pipe)\u003c\/li\u003e\n  \u003cli\u003eWorking Pressure: Up to 500 PSI (application dependent)\u003c\/li\u003e\n  \u003cli\u003eTemperature Range: -30°F to 230°F (EPDM gasket)\u003c\/li\u003e\n  \u003cli\u003eInstallation Torque: Typically 30–50 ft-lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e🧱 Why Choose Ductile Iron?\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDuctile iron\u003c\/strong\u003e offers superior strength and durability, making it ideal for high-pressure piping systems:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh Strength:\u003c\/strong\u003e Handles demanding mechanical and fire protection applications\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Resistant to impact and wear for long service life\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorrosion Resistance:\u003c\/strong\u003e Protective coating guards against rust and environmental factors\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e💡 Common Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eFire sprinkler systems\u003c\/li\u003e\n  \u003cli\u003eHVAC piping networks\u003c\/li\u003e\n  \u003cli\u003eIndustrial process piping\u003c\/li\u003e\n  \u003cli\u003eWater supply systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eReliable. Compliant. Built for performance.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003e❓ Frequently Asked Questions\u003c\/h3\u003e\n\n\u003cstrong\u003e1) What pipe size does this coupling fit?\u003c\/strong\u003e\u003cbr\u003e\nIt is designed for 1\" nominal pipe size, which has a 1.315\" outside diameter.\n\n\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003e2) Is it approved for fire protection systems?\u003c\/strong\u003e\u003cbr\u003e\nYes. This coupling is UL Listed and FM Approved for use in fire suppression and sprinkler system piping.\n\n\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003e3) Does it include the gasket and bolts?\u003c\/strong\u003e\u003cbr\u003e\nYes. Each coupling includes the ductile iron housing, pre-lubricated EPDM gasket, and bolts for installation.\n\n\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003e4) Can this be used with PVC or CPVC pipe?\u003c\/strong\u003e\u003cbr\u003e\nNo. It is designed for use with steel or ductile iron piping systems only.\n","brand":"United Plumbing \u0026 Fire Supplies","offers":[{"title":"Default Title","offer_id":46260629799129,"sku":"","price":4.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/9694\/7161\/files\/7010007_01_1.jpg?v=1735415684"},{"product_id":"grooved-coupling-rigid-1-1-4","title":"1-1\/4\" Grooved Rigid Coupling – Ductile Iron, UL\/FM Approved","description":"\u003ch2\u003e🔩 1-1\/4\" Grooved Rigid Coupling – UL\/FM Approved for Fire Protection \u0026amp; Mechanical Systems\u003c\/h2\u003e\n\n\u003cp\u003eThis \u003cstrong\u003e1-1\/4 inch Grooved Rigid Coupling\u003c\/strong\u003e is engineered to deliver a tight, secure, and non-deflecting connection between steel pipes. Commonly used in \u003cstrong\u003efire suppression systems, HVAC lines, and mechanical piping\u003c\/strong\u003e, it ensures a rigid joint that maintains system alignment and resists flexing under pressure.\u003c\/p\u003e\n\n\u003cp\u003eConstructed from high-strength \u003cstrong\u003eductile iron\u003c\/strong\u003e and coated with an orange enamel finish for corrosion protection, it comes equipped with a \u003cstrong\u003epre-lubricated EPDM rubber gasket\u003c\/strong\u003e to ensure a long-lasting seal. It is fully \u003cstrong\u003eUL Listed and FM Approved\u003c\/strong\u003e, meeting industry standards for reliability and performance.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e⚙️ Key Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 1-1\/4\" nominal pipe size (NPS)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e ASTM A536 ductile iron housing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Non-lead orange enamel paint or galvanized (varies by model)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGasket:\u003c\/strong\u003e Grade E EPDM, pre-lubricated for water systems\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDesign:\u003c\/strong\u003e Rigid coupling – non-flexing, fixed pipe alignment\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e UL Listed and FM Approved\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e📐 Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003ePipe OD Compatibility: 1.660\" (standard for 1-1\/4\" Schedule 40 steel pipe)\u003c\/li\u003e\n  \u003cli\u003eWorking Pressure: Up to 500 PSI (application dependent)\u003c\/li\u003e\n  \u003cli\u003eTemperature Range: -30°F to 230°F (EPDM gasket)\u003c\/li\u003e\n  \u003cli\u003eInstallation Torque: Typically 30–50 ft-lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e🧱 Why Choose Ductile Iron?\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDuctile iron\u003c\/strong\u003e is trusted in the industry for grooved fittings due to its strength, longevity, and adaptability:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-pressure tolerance:\u003c\/strong\u003e Ideal for demanding mechanical systems\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Impact and vibration-resistant\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorrosion protection:\u003c\/strong\u003e Coated to perform in wet and humid conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e💡 Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eFire sprinkler and riser systems\u003c\/li\u003e\n  \u003cli\u003eCommercial HVAC piping\u003c\/li\u003e\n  \u003cli\u003eMechanical room connections\u003c\/li\u003e\n  \u003cli\u003eIndustrial water lines\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eBuilt tough for commercial performance and trusted by pros nationwide.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003e❓ Frequently Asked Questions\u003c\/h3\u003e\n\n\u003cstrong\u003e1) What size pipe does this fit?\u003c\/strong\u003e\u003cbr\u003e\nThis coupling fits 1-1\/4\" nominal pipe size, which has a 1.660\" outside diameter.\n\n\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003e2) Is it UL\/FM approved for fire use?\u003c\/strong\u003e\u003cbr\u003e\nYes. It is UL Listed and FM Approved for use in fire sprinkler and suppression piping.\n\n\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003e3) Does this include the necessary bolts and gasket?\u003c\/strong\u003e\u003cbr\u003e\nYes. Each coupling comes complete with housing, EPDM gasket, and bolts for installation.\n\n\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003e4) Can I use this with PVC pipe?\u003c\/strong\u003e\u003cbr\u003e\nNo. It is designed for use with steel or ductile iron piping only.\n","brand":"United Plumbing \u0026 Fire Supplies","offers":[{"title":"Default Title","offer_id":46260632060121,"sku":"","price":4.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/9694\/7161\/files\/7010007_01_1_3b03b546-ec4b-43c6-bdf8-89734c1dea69.jpg?v=1735416097"},{"product_id":"grooved-rigid-coupling-1-5-inch","title":"1-1\/2\" Grooved Rigid Coupling – Ductile Iron, UL\/FM Approved","description":"\u003ch2\u003e🔩 1-1\/2\" Grooved Rigid Coupling – UL\/FM Approved for Fire \u0026amp; Mechanical Pipe Systems\u003c\/h2\u003e\n\n\u003cp\u003eThis \u003cstrong\u003e1-1\/2 inch Grooved Rigid Coupling\u003c\/strong\u003e is engineered to provide a fixed, high-strength connection between grooved steel pipes. Designed for use in \u003cstrong\u003efire sprinkler systems, HVAC piping, and mechanical installations\u003c\/strong\u003e, it offers a rigid, non-deflecting joint that maintains proper pipe alignment under high pressure.\u003c\/p\u003e\n\n\u003cp\u003eConstructed from durable \u003cstrong\u003eASTM A536 ductile iron\u003c\/strong\u003e and finished with protective orange enamel, this coupling comes with a \u003cstrong\u003epre-lubricated EPDM gasket\u003c\/strong\u003e for water systems. It meets strict safety and performance standards, being both \u003cstrong\u003eUL Listed and FM Approved\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e⚙️ Key Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 1-1\/2\" nominal pipe size (NPS)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Ductile iron housing (ASTM A536)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Orange enamel or galvanized coating\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGasket:\u003c\/strong\u003e Grade E EPDM, factory-lubricated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDesign:\u003c\/strong\u003e Rigid style – no axial or angular movement\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e UL Listed and FM Approved\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e📐 Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003ePipe OD Compatibility: 1.900\" (Standard for 1-1\/2\" Schedule 40 steel pipe)\u003c\/li\u003e\n  \u003cli\u003eWorking Pressure: Up to 500 PSI\u003c\/li\u003e\n  \u003cli\u003eTemperature Range: -30°F to 230°F (EPDM)\u003c\/li\u003e\n  \u003cli\u003eInstallation Torque: Typically 30–50 ft-lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e🧱 Why Ductile Iron?\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDuctile iron\u003c\/strong\u003e is the trusted standard for high-pressure piping connections:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStrength:\u003c\/strong\u003e Handles demanding mechanical and fire system loads\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Resists cracking and corrosion in harsh conditions\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSafety:\u003c\/strong\u003e Certified to meet UL\/FM standards for peace of mind\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e💡 Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eFire sprinkler risers and main lines\u003c\/li\u003e\n  \u003cli\u003eChilled water and condenser loops\u003c\/li\u003e\n  \u003cli\u003eHVAC system headers and branches\u003c\/li\u003e\n  \u003cli\u003eMechanical room and utility piping\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eStrong. Certified. Installation-ready.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003e❓ Frequently Asked Questions\u003c\/h3\u003e\n\n\u003cstrong\u003e1) What pipe size does this coupling fit?\u003c\/strong\u003e\u003cbr\u003e\nIt fits 1-1\/2\" Schedule 40 steel pipe, which has a 1.900\" outside diameter.\n\n\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003e2) Is it suitable for fire protection systems?\u003c\/strong\u003e\u003cbr\u003e\nYes. It is UL Listed and FM Approved for use in sprinkler and fire suppression piping.\n\n\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003e3) What’s included with the product?\u003c\/strong\u003e\u003cbr\u003e\nThe coupling includes the ductile iron housing, factory-lubricated EPDM gasket, and steel bolts.\n\n\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003e4) Can this be used for flexible joints?\u003c\/strong\u003e\u003cbr\u003e\nNo. This is a rigid coupling, designed to keep the pipe in fixed alignment with no movement.\n","brand":"United Plumbing \u0026 Fire Supplies","offers":[{"title":"Default Title","offer_id":46260640612569,"sku":null,"price":4.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/9694\/7161\/files\/7010007_01_1_3b03b546-ec4b-43c6-bdf8-89734c1dea69.jpg?v=1735416097"},{"product_id":"grooved-rigid-coupling-2-inch","title":"2\" Grooved Rigid Coupling – Ductile Iron, UL\/FM Approved","description":"\u003ch2\u003e🔩 2\" Grooved Rigid Coupling – UL\/FM Approved for Fire Protection \u0026amp; Mechanical Systems\u003c\/h2\u003e\n\n\u003cp\u003eThis \u003cstrong\u003e2-inch Grooved Rigid Coupling\u003c\/strong\u003e provides a strong, non-deflecting connection for grooved-end steel piping in \u003cstrong\u003efire suppression, HVAC, and industrial systems\u003c\/strong\u003e. Designed to keep pipe sections in fixed alignment, it’s ideal for use where \u003cstrong\u003ezero axial or angular movement\u003c\/strong\u003e is required.\u003c\/p\u003e\n\n\u003cp\u003eMade from \u003cstrong\u003eASTM A536 ductile iron\u003c\/strong\u003e with an \u003cstrong\u003eorange enamel coating\u003c\/strong\u003e or galvanized finish, and a \u003cstrong\u003epre-lubricated Grade E EPDM gasket\u003c\/strong\u003e, this coupling is engineered for fast installation and long-lasting performance. It is both \u003cstrong\u003eUL Listed and FM Approved\u003c\/strong\u003e for critical use cases.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e⚙️ Key Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 2\" nominal pipe size (NPS)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePipe OD Compatibility:\u003c\/strong\u003e 2.375\" (Schedule 40 steel pipe)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Ductile iron housing, ASTM A536 standard\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGasket:\u003c\/strong\u003e EPDM rubber, pre-lubricated (Grade E)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Orange enamel or zinc galvanized\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e UL Listed and FM Approved\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDesign:\u003c\/strong\u003e Rigid connection – no flex or movement\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e📐 Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eWorking Pressure: Up to 500 PSI\u003c\/li\u003e\n  \u003cli\u003eTemperature Range: -30°F to 230°F (EPDM gasket)\u003c\/li\u003e\n  \u003cli\u003eInstallation Torque: 40–60 ft-lbs (typical)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e🧱 Why Ductile Iron?\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDuctile iron\u003c\/strong\u003e is the most trusted material for mechanical and fire pipe systems:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh strength:\u003c\/strong\u003e Resists pressure, shock, and mechanical stress\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Long service life in demanding environments\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorrosion protection:\u003c\/strong\u003e Factory coating resists rust and wear\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e💡 Common Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eFire sprinkler system mains and branch lines\u003c\/li\u003e\n  \u003cli\u003eChilled water and condenser piping\u003c\/li\u003e\n  \u003cli\u003eIndustrial mechanical piping networks\u003c\/li\u003e\n  \u003cli\u003eWater distribution systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eBuilt for high-pressure systems. Trusted by fire and mechanical pros.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003e❓ Frequently Asked Questions\u003c\/h3\u003e\n\n\u003cstrong\u003e1) What size pipe does this fit?\u003c\/strong\u003e\u003cbr\u003e\nThis coupling fits 2\" Schedule 40 steel pipe with a 2.375\" outside diameter.\n\n\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003e2) Can this be used in fire protection systems?\u003c\/strong\u003e\u003cbr\u003e\nYes — it is UL Listed and FM Approved for use in fire sprinkler and suppression piping.\n\n\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003e3) What’s included in the box?\u003c\/strong\u003e\u003cbr\u003e\nEach unit includes the ductile iron housing, EPDM gasket, and heavy-duty bolts — ready for install.\n\n\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003e4) Is this coupling rigid or flexible?\u003c\/strong\u003e\u003cbr\u003e\nRigid. It is designed to hold pipe sections in fixed alignment without deflection or axial movement.\n","brand":"United Plumbing \u0026 Fire Supplies","offers":[{"title":"Default Title","offer_id":46260647100633,"sku":null,"price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/9694\/7161\/files\/7010007_01_1_3b03b546-ec4b-43c6-bdf8-89734c1dea69.jpg?v=1735416097"},{"product_id":"grooved-rigid-coupling-2-5-inch","title":"2-1\/2\" Grooved Rigid Coupling – Ductile Iron, UL\/FM Approved","description":"\u003ch2\u003e🔩 2-1\/2\" Grooved Rigid Coupling – UL\/FM Approved for Fire \u0026amp; Mechanical Piping\u003c\/h2\u003e\n\n\u003cp\u003eThis \u003cstrong\u003e2-1\/2 inch Grooved Rigid Coupling\u003c\/strong\u003e is engineered to provide a strong, immovable connection between grooved-end steel pipes. It’s ideal for use in \u003cstrong\u003efire sprinkler mains, HVAC systems, and mechanical loops\u003c\/strong\u003e where pipe alignment must remain fixed under pressure.\u003c\/p\u003e\n\n\u003cp\u003eConstructed from high-strength \u003cstrong\u003eductile iron\u003c\/strong\u003e and finished with \u003cstrong\u003ecorrosion-resistant orange enamel\u003c\/strong\u003e or galvanized coating, this rigid coupling features a \u003cstrong\u003epre-lubricated EPDM gasket\u003c\/strong\u003e for fast, reliable sealing. Certified for safety and code compliance, it’s both \u003cstrong\u003eUL Listed and FM Approved\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e⚙️ Key Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 2-1\/2\" nominal pipe size (NPS)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePipe OD Compatibility:\u003c\/strong\u003e 2.875\" (Schedule 40 steel pipe)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Ductile iron housing (ASTM A536)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGasket:\u003c\/strong\u003e Grade E EPDM, factory-lubricated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Painted or galvanized for corrosion resistance\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e UL Listed, FM Approved, ANSI\/AWWA C606 compliant\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDesign:\u003c\/strong\u003e Rigid – holds pipe sections in fixed alignment\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e📐 Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eWorking Pressure: Up to 500 PSI (varies by system)\u003c\/li\u003e\n  \u003cli\u003eTemperature Range: -30°F to 230°F (EPDM)\u003c\/li\u003e\n  \u003cli\u003eInstallation Torque: Typically 50–70 ft-lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e🧱 Why Ductile Iron?\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDuctile iron\u003c\/strong\u003e is the trusted choice for grooved couplings in demanding installations:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh pressure capability:\u003c\/strong\u003e Reliable in fire and industrial systems\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Impact-resistant and built for long-term service\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProtective finish:\u003c\/strong\u003e Factory coated to resist rust, wear, and moisture\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e💡 Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eFire sprinkler risers and main lines\u003c\/li\u003e\n  \u003cli\u003eCommercial HVAC water loops\u003c\/li\u003e\n  \u003cli\u003eIndustrial mechanical piping systems\u003c\/li\u003e\n  \u003cli\u003eWater supply and return lines\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eCertified. Rigid. Built for secure connections in high-performance systems.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003e❓ Frequently Asked Questions\u003c\/h3\u003e\n\n\u003cstrong\u003e1) What pipe size is this designed for?\u003c\/strong\u003e\u003cbr\u003e\nThis coupling fits 2-1\/2\" Schedule 40 steel pipe with a 2.875\" outside diameter.\n\n\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003e2) Is it certified for fire suppression use?\u003c\/strong\u003e\u003cbr\u003e\nYes, it is UL Listed and FM Approved for use in fire protection piping systems.\n\n\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003e3) Does it come with gasket and bolts?\u003c\/strong\u003e\u003cbr\u003e\nYes, the product includes the ductile iron housing, EPDM gasket, and two bolts for installation.\n\n\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003e4) Is this a rigid or flexible coupling?\u003c\/strong\u003e\u003cbr\u003e\nThis is a rigid coupling — it holds the pipe in a fixed position with no flexibility or deflection.\n","brand":"United Plumbing \u0026 Fire Supplies","offers":[{"title":"Default Title","offer_id":46260648640729,"sku":null,"price":5.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/9694\/7161\/files\/7010007_01_1_3b03b546-ec4b-43c6-bdf8-89734c1dea69.jpg?v=1735416097"},{"product_id":"grooved-rigid-coupling-3-inch","title":"3\" Grooved Rigid Coupling – Ductile Iron, UL\/FM Approved","description":"\u003ch2\u003e🔩 3\" Grooved Rigid Coupling – UL\/FM Approved for Fire Protection \u0026amp; Mechanical Systems\u003c\/h2\u003e\n\n\u003cp\u003eThis \u003cstrong\u003e3-inch Grooved Rigid Coupling\u003c\/strong\u003e is engineered to provide a strong, fixed connection between steel pipe sections in \u003cstrong\u003efire suppression, HVAC, and mechanical piping systems\u003c\/strong\u003e. Designed to eliminate pipe deflection, this rigid-style coupling ensures proper alignment and secure sealing under high pressure.\u003c\/p\u003e\n\n\u003cp\u003eBuilt from \u003cstrong\u003eASTM A536 ductile iron\u003c\/strong\u003e and finished in protective \u003cstrong\u003eorange enamel or galvanized coating\u003c\/strong\u003e, this coupling is equipped with a \u003cstrong\u003epre-lubricated EPDM gasket\u003c\/strong\u003e for long-lasting sealing performance. Fully \u003cstrong\u003eUL Listed and FM Approved\u003c\/strong\u003e, it’s ideal for mission-critical installs that demand code compliance and reliability.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e⚙️ Key Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 3\" nominal pipe size (NPS)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePipe OD Compatibility:\u003c\/strong\u003e 3.500\" (Schedule 40 steel pipe)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Ductile iron (ASTM A536)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGasket:\u003c\/strong\u003e Grade E EPDM, pre-lubricated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Orange enamel or galvanized\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDesign:\u003c\/strong\u003e Rigid – holds pipes firmly in alignment, no flex\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e UL Listed, FM Approved, ANSI\/AWWA C606 compliant\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e📐 Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eWorking Pressure: Up to 500 PSI\u003c\/li\u003e\n  \u003cli\u003eTemperature Range: -30°F to 230°F (EPDM gasket)\u003c\/li\u003e\n  \u003cli\u003eInstallation Torque: 60–80 ft-lbs (typical)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e🧱 Why Ductile Iron?\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDuctile iron\u003c\/strong\u003e is trusted for critical applications where performance, strength, and long service life are essential:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh pressure tolerance:\u003c\/strong\u003e Built for demanding system loads\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eImpact resistance:\u003c\/strong\u003e More durable than cast iron\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorrosion protection:\u003c\/strong\u003e Factory-coated for long-term durability\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e💡 Common Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eFire sprinkler risers and mains\u003c\/li\u003e\n  \u003cli\u003eHVAC chilled\/condenser water systems\u003c\/li\u003e\n  \u003cli\u003eIndustrial mechanical piping\u003c\/li\u003e\n  \u003cli\u003eProcess water loops\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eCode-compliant. Jobsite ready. Built for performance.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003e❓ Frequently Asked Questions\u003c\/h3\u003e\n\n\u003cstrong\u003e1) What size pipe does this coupling fit?\u003c\/strong\u003e\u003cbr\u003e\nIt fits 3\" nominal Schedule 40 steel pipe with a 3.500\" outside diameter.\n\n\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003e2) Is it UL\/FM certified?\u003c\/strong\u003e\u003cbr\u003e\nYes — this coupling is both UL Listed and FM Approved for use in fire protection and mechanical piping systems.\n\n\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003e3) What comes in the box?\u003c\/strong\u003e\u003cbr\u003e\nThe coupling includes the ductile iron housing, EPDM gasket, and bolts. Ready for installation.\n\n\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003e4) Is this flexible?\u003c\/strong\u003e\u003cbr\u003e\nNo. This is a rigid coupling — it holds the pipe in fixed alignment with no movement.\n","brand":"United Plumbing \u0026 Fire Supplies","offers":[{"title":"Default Title","offer_id":46260662042841,"sku":null,"price":6.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/9694\/7161\/files\/7010007_01_1_3b03b546-ec4b-43c6-bdf8-89734c1dea69.jpg?v=1735416097"},{"product_id":"grooved-rigid-coupling-4-inch","title":"4\" Grooved Rigid Coupling – Ductile Iron, UL\/FM Approved","description":"\u003ch2\u003e🔩 4\" Grooved Rigid Coupling – UL\/FM Approved for Fire Protection \u0026amp; Commercial Piping\u003c\/h2\u003e\n\n\u003cp\u003eThis \u003cstrong\u003e4-inch Grooved Rigid Coupling\u003c\/strong\u003e is designed for a strong, non-flexing connection between grooved-end pipes in \u003cstrong\u003efire sprinkler systems, HVAC water loops, and mechanical installations\u003c\/strong\u003e. Its rigid design ensures no axial or angular deflection, maintaining pipe alignment under pressure and mechanical stress.\u003c\/p\u003e\n\n\u003cp\u003eBuilt from \u003cstrong\u003eASTM A536 ductile iron\u003c\/strong\u003e and coated with corrosion-resistant \u003cstrong\u003eorange enamel or zinc galvanization\u003c\/strong\u003e, it features a \u003cstrong\u003eGrade E EPDM gasket\u003c\/strong\u003e pre-lubricated for fast and secure sealing. Fully \u003cstrong\u003eUL Listed and FM Approved\u003c\/strong\u003e, this coupling meets the highest performance and safety standards in the industry.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e⚙️ Key Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 4\" nominal pipe size (NPS)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePipe OD Compatibility:\u003c\/strong\u003e 4.500\" (Schedule 40 steel pipe)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Ductile iron housing (ASTM A536)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGasket:\u003c\/strong\u003e Grade E EPDM, pre-lubricated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Orange enamel or galvanized\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDesign:\u003c\/strong\u003e Rigid – zero movement, holds pipe alignment\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e UL Listed, FM Approved, ANSI\/AWWA C606 compliant\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e📐 Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eWorking Pressure: Up to 500 PSI\u003c\/li\u003e\n  \u003cli\u003eTemperature Range: -30°F to 230°F (EPDM)\u003c\/li\u003e\n  \u003cli\u003eInstallation Torque: Typically 80–100 ft-lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e🧱 Why Ductile Iron?\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDuctile iron\u003c\/strong\u003e is used in all high-performance rigid couplings due to its unmatched strength and longevity:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePressure-rated strength:\u003c\/strong\u003e Withstands high system loads\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eImpact resistance:\u003c\/strong\u003e Less prone to cracking under mechanical stress\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoated for corrosion resistance:\u003c\/strong\u003e Performs in damp, outdoor, and indoor environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e💡 Common Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eFire sprinkler mains and risers\u003c\/li\u003e\n  \u003cli\u003eChilled and condenser water piping\u003c\/li\u003e\n  \u003cli\u003eCommercial HVAC and mechanical piping\u003c\/li\u003e\n  \u003cli\u003eIndustrial process water systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eHeavy-duty performance. UL\/FM compliant. Ready for any jobsite.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003e❓ Frequently Asked Questions\u003c\/h3\u003e\n\n\u003cstrong\u003e1) What pipe size is this made for?\u003c\/strong\u003e\u003cbr\u003e\nIt fits 4\" Schedule 40 steel pipe with a 4.500\" outside diameter.\n\n\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003e2) Is this UL\/FM certified?\u003c\/strong\u003e\u003cbr\u003e\nYes — this coupling is both UL Listed and FM Approved for use in critical systems like fire protection and mechanical loops.\n\n\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003e3) What's included?\u003c\/strong\u003e\u003cbr\u003e\nThe housing, EPDM gasket, and bolts are all included — ready to install out of the box.\n\n\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003e4) Is this a flexible or rigid coupling?\u003c\/strong\u003e\u003cbr\u003e\nRigid. It’s designed to hold pipe sections in fixed alignment with no deflection or movement.\n","brand":"United Plumbing \u0026 Fire Supplies","offers":[{"title":"Default Title","offer_id":46260662599897,"sku":null,"price":7.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/9694\/7161\/files\/7010007_01_1_3b03b546-ec4b-43c6-bdf8-89734c1dea69.jpg?v=1735416097"},{"product_id":"grooved-rigid-coupling-5-inch","title":"5\" Grooved Rigid Coupling – Ductile Iron, UL\/FM Approved","description":"\u003ch2\u003e🔩 5\" Grooved Rigid Coupling – UL\/FM Approved for Fire, HVAC \u0026amp; Mechanical Systems\u003c\/h2\u003e\n\n\u003cp\u003eThis \u003cstrong\u003e5-inch Grooved Rigid Coupling\u003c\/strong\u003e delivers a strong, non-flexing pipe connection ideal for high-demand systems like \u003cstrong\u003efire protection mains, HVAC water loops, and industrial mechanical piping\u003c\/strong\u003e. It is engineered to keep pipes in fixed alignment with no axial or angular movement, ensuring system integrity under pressure and vibration.\u003c\/p\u003e\n\n\u003cp\u003eMade from rugged \u003cstrong\u003eASTM A536 ductile iron\u003c\/strong\u003e and coated in protective \u003cstrong\u003eorange enamel or zinc galvanization\u003c\/strong\u003e, it comes with a \u003cstrong\u003efactory-lubricated EPDM gasket\u003c\/strong\u003e for a watertight seal. This coupling is both \u003cstrong\u003eUL Listed and FM Approved\u003c\/strong\u003e and built to meet the highest standards for safety and durability.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e⚙️ Key Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 5\" nominal pipe size (NPS)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePipe OD Compatibility:\u003c\/strong\u003e 5.563\" (Schedule 40 steel pipe)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Ductile iron (ASTM A536)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGasket:\u003c\/strong\u003e Grade E EPDM, pre-lubricated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Painted (orange enamel) or galvanized\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDesign:\u003c\/strong\u003e Rigid coupling – no flex, fixed alignment\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e UL Listed, FM Approved, ANSI\/AWWA C606 compliant\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e📐 Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eWorking Pressure: Up to 500 PSI (depending on system)\u003c\/li\u003e\n  \u003cli\u003eTemperature Range: -30°F to 230°F (EPDM gasket)\u003c\/li\u003e\n  \u003cli\u003eInstallation Torque: 90–110 ft-lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e🧱 Why Ductile Iron?\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDuctile iron\u003c\/strong\u003e offers the strength, resilience, and corrosion resistance needed for large-scale mechanical and fire systems:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh system tolerance:\u003c\/strong\u003e Performs under pressure and vibration\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable construction:\u003c\/strong\u003e Crack- and impact-resistant\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorrosion protection:\u003c\/strong\u003e Factory-applied finish for long life\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e💡 Common Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eFire suppression mains in commercial buildings\u003c\/li\u003e\n  \u003cli\u003eHVAC water loops in large mechanical systems\u003c\/li\u003e\n  \u003cli\u003eIndustrial process piping\u003c\/li\u003e\n  \u003cli\u003eUtility room risers and manifold connections\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eCode-compliant. Built for contractors. Trusted in the field.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003e❓ Frequently Asked Questions\u003c\/h3\u003e\n\n\u003cstrong\u003e1) What pipe size does this fit?\u003c\/strong\u003e\u003cbr\u003e\nThis coupling fits 5\" Schedule 40 steel pipe with an outside diameter of 5.563\".\n\n\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003e2) Is it UL\/FM certified?\u003c\/strong\u003e\u003cbr\u003e\nYes. This product is UL Listed and FM Approved for use in fire, HVAC, and mechanical piping systems.\n\n\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003e3) What comes with it?\u003c\/strong\u003e\u003cbr\u003e\nEach coupling includes a ductile iron housing, pre-lubricated EPDM gasket, and heavy-duty bolts.\n\n\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003e4) Is this a rigid or flexible coupling?\u003c\/strong\u003e\u003cbr\u003e\nRigid. It holds pipe sections in fixed alignment with zero movement or deflection.\n","brand":"United Plumbing \u0026 Fire Supplies","offers":[{"title":"Default Title","offer_id":46260697989337,"sku":null,"price":11.65,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/9694\/7161\/files\/7010007_01_1.jpg?v=1735415684"},{"product_id":"grooved-rigid-coupling-6-inch","title":"6\" Grooved Rigid Coupling – Ductile Iron, UL\/FM Approved","description":"\u003ch2\u003e🔩 6\" Grooved Rigid Coupling – UL\/FM Approved for Fire, Mechanical, and Industrial Systems\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003e6-inch Grooved Rigid Coupling\u003c\/strong\u003e is built for heavy-duty applications where absolute pipe alignment and zero movement are critical. Ideal for \u003cstrong\u003efire protection mains, mechanical risers, HVAC loops, and industrial piping\u003c\/strong\u003e, this coupling ensures a secure, leak-free connection that resists vibration and shifting under pressure.\u003c\/p\u003e\n\n\u003cp\u003eCrafted from high-strength \u003cstrong\u003eductile iron (ASTM A536)\u003c\/strong\u003e and coated with corrosion-resistant \u003cstrong\u003eorange enamel or galvanization\u003c\/strong\u003e, it includes a \u003cstrong\u003epre-lubricated Grade E EPDM gasket\u003c\/strong\u003e for dependable sealing. This coupling is both \u003cstrong\u003eUL Listed and FM Approved\u003c\/strong\u003e for use in fire and commercial piping systems.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e⚙️ Key Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 6\" nominal pipe size (NPS)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePipe OD Compatibility:\u003c\/strong\u003e 6.625\" (Schedule 40 steel pipe)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Ductile iron, ASTM A536\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGasket:\u003c\/strong\u003e EPDM, Grade E, factory-lubricated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Orange enamel or galvanized\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDesign:\u003c\/strong\u003e Rigid – no axial or angular movement\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e UL Listed, FM Approved, ANSI\/AWWA C606 compliant\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e📐 Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eWorking Pressure: Up to 500 PSI (application dependent)\u003c\/li\u003e\n  \u003cli\u003eTemperature Range: -30°F to 230°F\u003c\/li\u003e\n  \u003cli\u003eInstallation Torque: 100–120 ft-lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e🧱 Why Ductile Iron?\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDuctile iron\u003c\/strong\u003e is the proven material of choice for critical infrastructure:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh strength:\u003c\/strong\u003e Withstands pressure surges and mechanical stress\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable construction:\u003c\/strong\u003e Long service life in demanding systems\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorrosion resistance:\u003c\/strong\u003e Protective coating stands up to harsh environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e💡 Common Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eFire suppression mains in warehouses and high-rises\u003c\/li\u003e\n  \u003cli\u003eMechanical and utility risers in commercial buildings\u003c\/li\u003e\n  \u003cli\u003eHVAC system loops and returns\u003c\/li\u003e\n  \u003cli\u003eLarge-scale industrial water and fluid systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eCertified for pressure. Built for performance. Trusted in the field.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003e❓ Frequently Asked Questions\u003c\/h3\u003e\n\n\u003cstrong\u003e1) What size pipe is this for?\u003c\/strong\u003e\u003cbr\u003e\nThis coupling fits 6\" nominal Schedule 40 steel pipe with a 6.625\" outside diameter.\n\n\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003e2) Is it UL\/FM certified?\u003c\/strong\u003e\u003cbr\u003e\nYes — it is UL Listed and FM Approved for use in fire protection, mechanical, and HVAC systems.\n\n\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003e3) What's included?\u003c\/strong\u003e\u003cbr\u003e\nEach unit includes the ductile iron housing, pre-lubricated EPDM gasket, and two bolts — ready for install.\n\n\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003e4) Is it flexible?\u003c\/strong\u003e\u003cbr\u003e\nNo — this is a rigid coupling. It keeps pipe segments fixed in position with no deflection.\n","brand":"United Plumbing \u0026 Fire Supplies","offers":[{"title":"Default Title","offer_id":46260698775769,"sku":null,"price":12.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/9694\/7161\/files\/7010007_01_1.jpg?v=1735415684"},{"product_id":"grooved-rigid-coupling-8-inch","title":"8\" Grooved Rigid Coupling – Ductile Iron, UL\/FM Approved","description":"\u003ch2\u003e🔩 8\" Grooved Rigid Coupling – UL\/FM Approved for Large-Scale Fire \u0026amp; Mechanical Piping\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003e8-inch Grooved Rigid Coupling\u003c\/strong\u003e is engineered for heavy-duty applications where a fixed, no-deflection connection is essential. It’s designed for \u003cstrong\u003elarge fire suppression mains, mechanical risers, industrial water systems, and chilled water loops\u003c\/strong\u003e where alignment must remain locked under high pressure and load.\u003c\/p\u003e\n\n\u003cp\u003eThis coupling is made from high-strength \u003cstrong\u003eASTM A536 ductile iron\u003c\/strong\u003e with a \u003cstrong\u003ecorrosion-resistant orange enamel or galvanized finish\u003c\/strong\u003e. It includes a \u003cstrong\u003epre-lubricated Grade E EPDM gasket\u003c\/strong\u003e for quick, secure, and watertight installation. It is fully \u003cstrong\u003eUL Listed and FM Approved\u003c\/strong\u003e, meeting the highest standards for safety and reliability in large-diameter pipe systems.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e⚙️ Key Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 8\" nominal pipe size (NPS)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePipe OD Compatibility:\u003c\/strong\u003e 8.625\" (Standard for 8\" Schedule 40 steel pipe)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Ductile iron housing (ASTM A536)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGasket:\u003c\/strong\u003e Grade E EPDM, factory-lubricated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Orange enamel or galvanized (varies by model)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDesign:\u003c\/strong\u003e Rigid – zero axial or angular pipe movement\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e UL Listed, FM Approved, ANSI\/AWWA C606 compliant\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e📐 Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eWorking Pressure: Up to 500 PSI (application dependent)\u003c\/li\u003e\n  \u003cli\u003eTemperature Range: -30°F to 230°F\u003c\/li\u003e\n  \u003cli\u003eInstallation Torque: Typically 130–150 ft-lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e🧱 Why Ductile Iron?\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDuctile iron\u003c\/strong\u003e is the industry standard for large grooved fittings because of its proven ability to:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003cstrong\u003eWithstand high pressure and pipe weight\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eResist cracking under impact or vibration\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eHold alignment in vertical risers and long runs\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003ePrevent corrosion with factory-applied coating\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e💡 Common Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eLarge commercial fire sprinkler systems\u003c\/li\u003e\n  \u003cli\u003eHVAC chilled water mains in campuses or towers\u003c\/li\u003e\n  \u003cli\u003eIndustrial cooling or process water systems\u003c\/li\u003e\n  \u003cli\u003eMechanical risers and trunk lines in high-rise buildings\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eBig system reliability. Certified for fire and mechanical use. Built to last.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003e❓ Frequently Asked Questions\u003c\/h3\u003e\n\n\u003cstrong\u003e1) What pipe does this fit?\u003c\/strong\u003e\u003cbr\u003e\nThis coupling is designed for 8\" Schedule 40 steel pipe, which has an outside diameter of 8.625\".\n\n\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003e2) Is it UL\/FM certified?\u003c\/strong\u003e\u003cbr\u003e\nYes — this model is both UL Listed and FM Approved for fire protection and mechanical systems.\n\n\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003e3) What’s included?\u003c\/strong\u003e\u003cbr\u003e\nEach coupling includes a ductile iron housing, pre-lubricated EPDM gasket, and heavy-duty bolts — ready to install.\n\n\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003e4) Is this a flexible coupling?\u003c\/strong\u003e\u003cbr\u003e\nNo — this is a rigid coupling designed to keep pipe alignment fixed with no movement or deflection.\n","brand":"United Plumbing \u0026 Fire Supplies","offers":[{"title":"Default Title","offer_id":46260698808537,"sku":null,"price":24.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/9694\/7161\/files\/7010007_01_1.jpg?v=1735415684"},{"product_id":"grooved-flexible-coupling-1-1-4-inch","title":"1-1\/4\" Grooved Flexible Coupling – Ductile Iron, UL\/FM Approved","description":"\u003ch2\u003e🔩 1-1\/4\" Grooved Flexible Coupling – UL\/FM Approved for Fire, HVAC \u0026amp; Mechanical Piping\u003c\/h2\u003e\n\n\u003cp\u003eThis \u003cstrong\u003e1-1\/4 inch Grooved Flexible Coupling\u003c\/strong\u003e offers a secure yet flexible connection between grooved steel pipes in \u003cstrong\u003efire suppression, mechanical, and HVAC systems\u003c\/strong\u003e. Its flexible design accommodates \u003cstrong\u003epipe movement, vibration, and expansion\u003c\/strong\u003e, reducing stress on system components and ensuring long-term performance in dynamic installations.\u003c\/p\u003e\n\n\u003cp\u003eManufactured from durable \u003cstrong\u003eASTM A536 ductile iron\u003c\/strong\u003e, this coupling features a \u003cstrong\u003epre-lubricated Grade E EPDM gasket\u003c\/strong\u003e and is finished in either \u003cstrong\u003eorange enamel or galvanized coating\u003c\/strong\u003e for corrosion resistance. Fully \u003cstrong\u003eUL Listed and FM Approved\u003c\/strong\u003e, this coupling meets stringent safety and performance standards for commercial and industrial systems.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e⚙️ Key Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 1-1\/4\" nominal pipe size (NPS)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePipe OD Compatibility:\u003c\/strong\u003e 1.660\" (Standard for 1-1\/4\" Schedule 40 steel pipe)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Ductile iron housing (ASTM A536)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGasket:\u003c\/strong\u003e Grade E EPDM, pre-lubricated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Orange enamel or galvanized\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDesign:\u003c\/strong\u003e Flexible – allows for axial movement and angular deflection\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e UL Listed, FM Approved, ANSI\/AWWA C606 compliant\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e📐 Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eWorking Pressure: Up to 500 PSI\u003c\/li\u003e\n  \u003cli\u003eTemperature Range: -30°F to 230°F (EPDM gasket)\u003c\/li\u003e\n  \u003cli\u003eAngular Deflection: ±1° (varies by system)\u003c\/li\u003e\n  \u003cli\u003eInstallation Torque: Typically 30–50 ft-lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e🧱 Why Use a Flexible Coupling?\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eFlexible couplings\u003c\/strong\u003e are ideal for reducing system stress and improving installation efficiency in smaller-diameter piping:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003cstrong\u003eAbsorbs vibration and thermal expansion\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eReduces pipe misalignment issues\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003ePrevents leaks under fluctuating pressure\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eSpeeds up alignment and installation\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e💡 Common Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eFire sprinkler branch lines\u003c\/li\u003e\n  \u003cli\u003eHVAC terminal piping\u003c\/li\u003e\n  \u003cli\u003eMechanical utility systems\u003c\/li\u003e\n  \u003cli\u003eIndustrial process piping under 2\"\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eBuilt small. Performs big. Certified for safety and flexibility.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003e❓ Frequently Asked Questions\u003c\/h3\u003e\n\n\u003cstrong\u003e1) What pipe size is this for?\u003c\/strong\u003e\u003cbr\u003e\nThis coupling fits 1-1\/4\" Schedule 40 steel pipe with an outside diameter of 1.660\".\n\n\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003e2) Is this UL\/FM certified?\u003c\/strong\u003e\u003cbr\u003e\nYes — this coupling is both UL Listed and FM Approved for fire and mechanical piping systems.\n\n\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003e3) What type of gasket is included?\u003c\/strong\u003e\u003cbr\u003e\nIt comes with a pre-lubricated Grade E EPDM gasket suitable for water-based systems.\n\n\u003cbr\u003e\u003cbr\u003e\n\n\u003cstrong\u003e4) Can this absorb pipe movement?\u003c\/strong\u003e\u003cbr\u003e\nYes — as a flexible coupling, it allows for limited axial movement and angular deflection.\n","brand":"United Plumbing \u0026 Fire Supplies","offers":[{"title":"Default Title","offer_id":46265492570329,"sku":null,"price":4.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/9694\/7161\/files\/Victaulic_L006077PE0.jpg?v=1735418927"},{"product_id":"grooved-reducing-coupling-1-1-2-x-1-1-4","title":"Grooved Reducing Coupling 2\" x 1-1\/4\"","description":"\u003cdiv class=\"product attribute description\"\u003e\n\u003cdiv class=\"value\"\u003e\n\u003cdiv class=\"product attribute description\"\u003e\n\u003cdiv class=\"value\"\u003e\n\u003cdiv class=\"product attribute description\"\u003e\n\u003cdiv class=\"value\"\u003eDuctile Iron construction.\u003cbr\u003eNon-lead orange paint\u003cbr\u003eConforms to ASTM A536\u003cbr\u003eUL listed, FM Approved\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-content-type=\"row\" data-appearance=\"contained\" data-element=\"main\"\u003e\n\u003cdiv data-enable-parallax=\"0\" data-parallax-speed=\"0.5\" data-background-images=\"{}\" data-background-type=\"image\" data-video-loop=\"true\" data-video-play-only-visible=\"true\" data-video-lazy-load=\"true\" data-video-fallback-src=\"\" data-element=\"inner\" data-pb-style=\"KBMW9CE\"\u003e\n\u003cdiv data-content-type=\"html\" data-appearance=\"default\" data-element=\"main\" data-decoded=\"true\"\u003e\n\u003cbr\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eCalifornia Prop 65 WARNING\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/argco.com\/pub\/media\/argco\/landing_images\/warning1.png\" alt=\"\"\u003e\u003cstrong\u003eWARNING\u003c\/strong\u003e: This product can expose you to chemicals and or materials that are recognized by the State of California to cause cancer or reproductive harm. For more information, go to\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/www.p65warnings.ca.gov\/\" target=\"_blank\"\u003ewww.p65warnings.ca.gov\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"United Plumbing \u0026 Fire Supplies","offers":[{"title":"Default Title","offer_id":46265516884185,"sku":null,"price":6.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/9694\/7161\/files\/Victaulic_L006077PE0.jpg?v=1735418927"},{"product_id":"grooved-reducing-coupling-2-x-1-1-2","title":"Grooved Reducing Coupling 2\" x 1-1\/2\"","description":"\u003cdiv class=\"product attribute description\"\u003e\n\u003cdiv class=\"value\"\u003e\n\u003cdiv class=\"product attribute description\"\u003e\n\u003cdiv class=\"value\"\u003e\n\u003cdiv class=\"product attribute description\"\u003e\n\u003cdiv class=\"value\"\u003eDuctile Iron construction.\u003cbr\u003eNon-lead orange paint\u003cbr\u003eConforms to ASTM A536\u003cbr\u003eUL listed, FM Approved\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-element=\"main\" data-appearance=\"contained\" data-content-type=\"row\"\u003e\n\u003cdiv data-pb-style=\"KBMW9CE\" data-element=\"inner\" data-video-fallback-src=\"\" data-video-lazy-load=\"true\" data-video-play-only-visible=\"true\" data-video-loop=\"true\" data-background-type=\"image\" data-background-images=\"{}\" data-parallax-speed=\"0.5\" data-enable-parallax=\"0\"\u003e\n\u003cdiv data-decoded=\"true\" data-element=\"main\" data-appearance=\"default\" data-content-type=\"html\"\u003e\n\u003cbr\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eCalifornia Prop 65 WARNING\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/argco.com\/pub\/media\/argco\/landing_images\/warning1.png\"\u003e\u003cstrong\u003eWARNING\u003c\/strong\u003e: This product can expose you to chemicals and or materials that are recognized by the State of California to cause cancer or reproductive harm. For more information, go to\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/www.p65warnings.ca.gov\/\" target=\"_blank\"\u003ewww.p65warnings.ca.gov\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"United Plumbing \u0026 Fire Supplies","offers":[{"title":"Default Title","offer_id":46265530384601,"sku":null,"price":7.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/9694\/7161\/files\/7010109_02_2.jpg?v=1735594213"},{"product_id":"grooved-reducing-coupling-2-1-2-x-2","title":"Grooved Reducing Coupling 2-1\/2\" x 2\"","description":"\u003cdiv class=\"product attribute description\"\u003e\n\u003cdiv class=\"value\"\u003e\n\u003cdiv class=\"product attribute description\"\u003e\n\u003cdiv class=\"value\"\u003e\n\u003cdiv class=\"product attribute description\"\u003e\n\u003cdiv class=\"value\"\u003eDuctile Iron construction.\u003cbr\u003eNon-lead orange paint\u003cbr\u003eConforms to ASTM A536\u003cbr\u003eUL listed, FM Approved\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-element=\"main\" data-appearance=\"contained\" data-content-type=\"row\"\u003e\n\u003cdiv data-pb-style=\"KBMW9CE\" data-element=\"inner\" data-video-fallback-src=\"\" data-video-lazy-load=\"true\" data-video-play-only-visible=\"true\" data-video-loop=\"true\" data-background-type=\"image\" data-background-images=\"{}\" data-parallax-speed=\"0.5\" data-enable-parallax=\"0\"\u003e\n\u003cdiv data-decoded=\"true\" data-element=\"main\" data-appearance=\"default\" data-content-type=\"html\"\u003e\n\u003cbr\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eCalifornia Prop 65 WARNING\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/argco.com\/pub\/media\/argco\/landing_images\/warning1.png\"\u003e\u003cstrong\u003eWARNING\u003c\/strong\u003e: This product can expose you to chemicals and or materials that are recognized by the State of California to cause cancer or reproductive harm. For more information, go to\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/www.p65warnings.ca.gov\/\" target=\"_blank\"\u003ewww.p65warnings.ca.gov\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"United Plumbing \u0026 Fire Supplies","offers":[{"title":"Default Title","offer_id":46265532154073,"sku":null,"price":8.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/9694\/7161\/files\/7010109_02_2.jpg?v=1735594213"},{"product_id":"grooved-reducing-coupling-3-x-2","title":"Grooved Reducing Coupling 3\" x 2\"","description":"\u003cdiv class=\"product attribute description\"\u003e\n\u003cdiv class=\"value\"\u003e\n\u003cdiv class=\"product attribute description\"\u003e\n\u003cdiv class=\"value\"\u003e\n\u003cdiv class=\"product attribute description\"\u003e\n\u003cdiv class=\"value\"\u003eDuctile Iron construction.\u003cbr\u003eNon-lead orange paint\u003cbr\u003eConforms to ASTM A536\u003cbr\u003eUL listed, FM Approved\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-element=\"main\" data-appearance=\"contained\" data-content-type=\"row\"\u003e\n\u003cdiv data-pb-style=\"KBMW9CE\" data-element=\"inner\" data-video-fallback-src=\"\" data-video-lazy-load=\"true\" data-video-play-only-visible=\"true\" data-video-loop=\"true\" data-background-type=\"image\" data-background-images=\"{}\" data-parallax-speed=\"0.5\" data-enable-parallax=\"0\"\u003e\n\u003cdiv data-decoded=\"true\" data-element=\"main\" data-appearance=\"default\" data-content-type=\"html\"\u003e\n\u003cbr\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eCalifornia Prop 65 WARNING\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/argco.com\/pub\/media\/argco\/landing_images\/warning1.png\"\u003e\u003cstrong\u003eWARNING\u003c\/strong\u003e: This product can expose you to chemicals and or materials that are recognized by the State of California to cause cancer or reproductive harm. For more information, go to\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/www.p65warnings.ca.gov\/\" target=\"_blank\"\u003ewww.p65warnings.ca.gov\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"United Plumbing \u0026 Fire Supplies","offers":[{"title":"Default Title","offer_id":46265545195737,"sku":null,"price":12.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/9694\/7161\/files\/7010109_02_2.jpg?v=1735594213"},{"product_id":"grooved-reducing-coupling-3-x-2-1-2","title":"Grooved Reducing Coupling 3\" x 2-1\/2\"","description":"\u003cdiv class=\"product attribute description\"\u003e\n\u003cdiv class=\"value\"\u003e\n\u003cdiv class=\"product attribute description\"\u003e\n\u003cdiv class=\"value\"\u003e\n\u003cdiv class=\"product attribute description\"\u003e\n\u003cdiv class=\"value\"\u003eDuctile Iron construction.\u003cbr\u003eNon-lead orange paint\u003cbr\u003eConforms to ASTM A536\u003cbr\u003eUL listed, FM Approved\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-content-type=\"row\" data-appearance=\"contained\" data-element=\"main\"\u003e\n\u003cdiv data-enable-parallax=\"0\" data-parallax-speed=\"0.5\" data-background-images=\"{}\" data-background-type=\"image\" data-video-loop=\"true\" data-video-play-only-visible=\"true\" data-video-lazy-load=\"true\" data-video-fallback-src=\"\" data-element=\"inner\" data-pb-style=\"KBMW9CE\"\u003e\n\u003cdiv data-content-type=\"html\" data-appearance=\"default\" data-element=\"main\" data-decoded=\"true\"\u003e\n\u003cbr\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eCalifornia Prop 65 WARNING\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/argco.com\/pub\/media\/argco\/landing_images\/warning1.png\" alt=\"\"\u003e\u003cstrong\u003eWARNING\u003c\/strong\u003e: This product can expose you to chemicals and or materials that are recognized by the State of California to cause cancer or reproductive harm. For more information, go to\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/www.p65warnings.ca.gov\/\" target=\"_blank\"\u003ewww.p65warnings.ca.gov\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"United Plumbing \u0026 Fire Supplies","offers":[{"title":"Default Title","offer_id":46265545785561,"sku":null,"price":13.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/9694\/7161\/files\/7010109_02_2.jpg?v=1735594213"},{"product_id":"grooved-reducing-coupling-4-x-2","title":"Grooved Reducing Coupling 4\" x 2\"","description":"\u003cdiv class=\"product attribute description\"\u003e\n\u003cdiv class=\"value\"\u003e\n\u003cdiv class=\"product attribute description\"\u003e\n\u003cdiv class=\"value\"\u003e\n\u003cdiv class=\"product attribute description\"\u003e\n\u003cdiv class=\"value\"\u003eDuctile Iron construction.\u003cbr\u003eNon-lead orange paint\u003cbr\u003eConforms to ASTM A536\u003cbr\u003eUL listed, FM Approved\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-content-type=\"row\" data-appearance=\"contained\" data-element=\"main\"\u003e\n\u003cdiv data-enable-parallax=\"0\" data-parallax-speed=\"0.5\" data-background-images=\"{}\" data-background-type=\"image\" data-video-loop=\"true\" data-video-play-only-visible=\"true\" data-video-lazy-load=\"true\" data-video-fallback-src=\"\" data-element=\"inner\" data-pb-style=\"KBMW9CE\"\u003e\n\u003cdiv data-content-type=\"html\" data-appearance=\"default\" data-element=\"main\" data-decoded=\"true\"\u003e\n\u003cbr\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eCalifornia Prop 65 WARNING\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/argco.com\/pub\/media\/argco\/landing_images\/warning1.png\" alt=\"\"\u003e\u003cstrong\u003eWARNING\u003c\/strong\u003e: This product can expose you to chemicals and or materials that are recognized by the State of California to cause cancer or reproductive harm. For more information, go to\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/www.p65warnings.ca.gov\/\" target=\"_blank\"\u003ewww.p65warnings.ca.gov\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"United Plumbing \u0026 Fire Supplies","offers":[{"title":"Default Title","offer_id":46265546539225,"sku":null,"price":17.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/9694\/7161\/files\/7010109_02_2.jpg?v=1735594213"},{"product_id":"grooved-reducing-coupling-4-x-2-1-2","title":"Grooved Reducing Coupling 4\" x 2-1\/2\"","description":"\u003cdiv class=\"product attribute description\"\u003e\n\u003cdiv class=\"value\"\u003e\n\u003cdiv class=\"product attribute description\"\u003e\n\u003cdiv class=\"value\"\u003e\n\u003cdiv class=\"product attribute description\"\u003e\n\u003cdiv class=\"value\"\u003eDuctile Iron construction.\u003cbr\u003eNon-lead orange paint\u003cbr\u003eConforms to ASTM A536\u003cbr\u003eUL listed, FM Approved\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-content-type=\"row\" data-appearance=\"contained\" data-element=\"main\"\u003e\n\u003cdiv data-enable-parallax=\"0\" data-parallax-speed=\"0.5\" data-background-images=\"{}\" data-background-type=\"image\" data-video-loop=\"true\" data-video-play-only-visible=\"true\" data-video-lazy-load=\"true\" data-video-fallback-src=\"\" data-element=\"inner\" data-pb-style=\"KBMW9CE\"\u003e\n\u003cdiv data-content-type=\"html\" data-appearance=\"default\" data-element=\"main\" data-decoded=\"true\"\u003e\n\u003cbr\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eCalifornia Prop 65 WARNING\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/argco.com\/pub\/media\/argco\/landing_images\/warning1.png\" alt=\"\"\u003e\u003cstrong\u003eWARNING\u003c\/strong\u003e: This product can expose you to chemicals and or materials that are recognized by the State of California to cause cancer or reproductive harm. For more information, go to\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/www.p65warnings.ca.gov\/\" target=\"_blank\"\u003ewww.p65warnings.ca.gov\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"United Plumbing \u0026 Fire Supplies","offers":[{"title":"Default Title","offer_id":46265548898521,"sku":null,"price":19.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/9694\/7161\/files\/7010109_02_2.jpg?v=1735594213"},{"product_id":"grooved-reducing-coupling-4-x-3","title":"Grooved Reducing Coupling 4\" x 3\"","description":"\u003cdiv class=\"product attribute description\"\u003e\n\u003cdiv class=\"value\"\u003e\n\u003cdiv class=\"product attribute description\"\u003e\n\u003cdiv class=\"value\"\u003e\n\u003cdiv class=\"product attribute description\"\u003e\n\u003cdiv class=\"value\"\u003eDuctile Iron construction.\u003cbr\u003eNon-lead orange paint\u003cbr\u003eConforms to ASTM A536\u003cbr\u003eUL listed, FM Approved\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-content-type=\"row\" data-appearance=\"contained\" data-element=\"main\"\u003e\n\u003cdiv data-enable-parallax=\"0\" data-parallax-speed=\"0.5\" data-background-images=\"{}\" data-background-type=\"image\" data-video-loop=\"true\" data-video-play-only-visible=\"true\" data-video-lazy-load=\"true\" data-video-fallback-src=\"\" data-element=\"inner\" data-pb-style=\"KBMW9CE\"\u003e\n\u003cdiv data-content-type=\"html\" data-appearance=\"default\" data-element=\"main\" data-decoded=\"true\"\u003e\n\u003cbr\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eCalifornia Prop 65 WARNING\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/argco.com\/pub\/media\/argco\/landing_images\/warning1.png\" alt=\"\"\u003e\u003cstrong\u003eWARNING\u003c\/strong\u003e: This product can expose you to chemicals and or materials that are recognized by the State of California to cause cancer or reproductive harm. For more information, go to\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/www.p65warnings.ca.gov\/\" target=\"_blank\"\u003ewww.p65warnings.ca.gov\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"United Plumbing \u0026 Fire Supplies","offers":[{"title":"Default Title","offer_id":46265550536921,"sku":null,"price":20.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/9694\/7161\/files\/7010109_02_2.jpg?v=1735594213"},{"product_id":"grooved-reducing-coupling-6-x-4","title":"Grooved Reducing Coupling 6\" x 4\"","description":"\u003cdiv class=\"product attribute description\"\u003e\n\u003cdiv class=\"value\"\u003e\n\u003cdiv class=\"product attribute description\"\u003e\n\u003cdiv class=\"value\"\u003e\n\u003cdiv class=\"product attribute description\"\u003e\n\u003cdiv class=\"value\"\u003eDuctile Iron construction.\u003cbr\u003eNon-lead orange paint\u003cbr\u003eConforms to ASTM A536\u003cbr\u003eUL listed, FM Approved\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-content-type=\"row\" data-appearance=\"contained\" data-element=\"main\"\u003e\n\u003cdiv data-enable-parallax=\"0\" data-parallax-speed=\"0.5\" data-background-images=\"{}\" data-background-type=\"image\" data-video-loop=\"true\" data-video-play-only-visible=\"true\" data-video-lazy-load=\"true\" data-video-fallback-src=\"\" data-element=\"inner\" data-pb-style=\"KBMW9CE\"\u003e\n\u003cdiv data-content-type=\"html\" data-appearance=\"default\" data-element=\"main\" data-decoded=\"true\"\u003e\n\u003cbr\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eCalifornia Prop 65 WARNING\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/argco.com\/pub\/media\/argco\/landing_images\/warning1.png\" alt=\"\"\u003e\u003cstrong\u003eWARNING\u003c\/strong\u003e: This product can expose you to chemicals and or materials that are recognized by the State of California to cause cancer or reproductive harm. For more information, go to\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/www.p65warnings.ca.gov\/\" target=\"_blank\"\u003ewww.p65warnings.ca.gov\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"United Plumbing \u0026 Fire Supplies","offers":[{"title":"Default Title","offer_id":46265550831833,"sku":null,"price":30.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/9694\/7161\/files\/7010109_02_2.jpg?v=1735594213"},{"product_id":"grooved-reducing-coupling-8-x-6","title":"Grooved Reducing Coupling 8\" x 6\"","description":"\u003cdiv class=\"product attribute description\"\u003e\n\u003cdiv class=\"value\"\u003e\n\u003cdiv class=\"product attribute description\"\u003e\n\u003cdiv class=\"value\"\u003e\n\u003cdiv class=\"product attribute description\"\u003e\n\u003cdiv class=\"value\"\u003eDuctile Iron construction.\u003cbr\u003eNon-lead orange paint\u003cbr\u003eConforms to ASTM A536\u003cbr\u003eUL listed, FM Approved\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-content-type=\"row\" data-appearance=\"contained\" data-element=\"main\"\u003e\n\u003cdiv data-enable-parallax=\"0\" data-parallax-speed=\"0.5\" data-background-images=\"{}\" data-background-type=\"image\" data-video-loop=\"true\" data-video-play-only-visible=\"true\" data-video-lazy-load=\"true\" data-video-fallback-src=\"\" data-element=\"inner\" data-pb-style=\"KBMW9CE\"\u003e\n\u003cdiv data-content-type=\"html\" data-appearance=\"default\" data-element=\"main\" data-decoded=\"true\"\u003e\n\u003cbr\u003e\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eCalifornia Prop 65 WARNING\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/argco.com\/pub\/media\/argco\/landing_images\/warning1.png\" alt=\"\"\u003e\u003cstrong\u003eWARNING\u003c\/strong\u003e: This product can expose you to chemicals and or materials that are recognized by the State of California to cause cancer or reproductive harm. For more information, go to\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/www.p65warnings.ca.gov\/\" target=\"_blank\"\u003ewww.p65warnings.ca.gov\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"United Plumbing \u0026 Fire Supplies","offers":[{"title":"Default Title","offer_id":46265551061209,"sku":null,"price":65.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/9694\/7161\/files\/7010109_02_2.jpg?v=1735594213"}],"url":"https:\/\/unitedplumbingandfiresupply.com\/collections\/rigid-coupling.oembed?page=2","provider":"United Plumbing \u0026 Fire Supply","version":"1.0","type":"link"}