1-1/2" Grooved Flexible Coupling – Ductile Iron, UL/FM Approved

🔩 1-1/2" Grooved Flexible Coupling – UL/FM Approved for Fire, HVAC & Mechanical Piping

This 1-1/2 inch Grooved Flexible Coupling is engineered to provide strong, flexible connections for piping systems used in fire protection, HVAC, and mechanical applications. Built from ductile iron with a corrosion-resistant coating and EPDM gasket, it absorbs vibration, allows for pipe movement, and helps prevent leaks due to misalignment or thermal expansion.

Whether you’re installing a fire sprinkler system or running chilled water lines, this coupling offers dependable performance and fast installation. Fully UL Listed and FM Approved, it meets major safety and compliance standards.

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⚙️ Key Features

• Size: 1-1/2" nominal pipe size (NPS)
• Flexible design allows for movement and vibration absorption
• Material: Ductile iron housing with protective coating
• Gasket: Pre-lubricated EPDM for water-based systems
• Approvals: UL Listed, FM Approved, ANSI/AWWA C606 compliant
• Finish: Painted or galvanized options available

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📐 Specifications

• Pipe OD Compatibility: 1.900" (Standard for 1-1/2" steel pipe)
• Working Pressure: Up to 500 PSI (varies by pipe schedule)
• Operating Temperature: -30°F to 230°F (EPDM gasket)
• Bolts: Heavy-duty carbon steel track bolts

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🧱 Why Ductile Iron?

Ductile iron is the standard material for grooved couplings due to its exceptional strength, durability, and flexibility:

• High strength: Withstands high pressures and mechanical stress
• Flexibility: Absorbs vibration, thermal expansion, and misalignment
• Durability: Crack-resistant and built for long-term use
• Corrosion protection: Factory-coated to resist rust and wear

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💡 Applications

• Fire sprinkler systems
• HVAC piping (chilled/condenser water)
• Mechanical and process piping

Reliable. Certified. Built for pros.

❓ Frequently Asked Questions

1) What is this coupling made from?
It’s made from high-strength ductile iron with a corrosion-resistant coating and EPDM gasket.

2) Is this coupling UL or FM certified?
Yes, this coupling is both UL Listed and FM Approved for use in fire protection and mechanical systems.

3) Can I use this coupling with PVC or CPVC pipe?
No. Grooved couplings are typically used with steel piping. Use pipe that meets AWWA or ASTM standards for grooved systems.

4) Do I need tools to install it?
Yes. A torque wrench is recommended to tighten the bolts to the manufacturer’s specified torque.