4" Grooved 90° Long Radius Elbow – Ductile Iron, UL/FM Approved

4" Grooved 90° Long Radius Elbow – Ductile Iron

The 4 inch grooved 90-degree long radius elbow is built for high-performance fire protection and mechanical piping systems where smooth directional changes are essential. Designed with a gentle 1.5D sweep, this fitting helps maintain flow efficiency, reduce pressure drop, and minimize stress on the system.

Why Use a Long Radius Elbow?

Compared to short-radius fittings, a long radius elbow offers a broader curve that improves hydraulic flow and reduces the chance of erosion, turbulence, or water hammer in pressurized systems. It’s the preferred solution when performance and system longevity are top priorities.

Key Features:

• Nominal Size: 4 inch
• Type: 90-degree long radius elbow
• Material: Ductile iron – durable and corrosion resistant
• Ends: Grooved connections for fast and easy assembly
• Certifications: UL Listed and FM Approved
• Standard Compliance: AWWA C606 groove system
• Finish: Black painted or red epoxy coated (may vary)

Typical Applications:

• Fire sprinkler systems and risers
• HVAC piping (chilled/hot water)
• Mechanical and process piping systems
• Industrial, municipal, and commercial plumbing systems

Technical Specifications:

• Pressure Rating: Up to 300 PSI (verify with system spec)
• Bend Radius: Long radius – approximately 1.5 x pipe diameter
• Groove Compatibility: Roll groove or cut groove ends
• Temperature Range: -20°F to 300°F (gasket dependent)

Installation Tip:

Use with compatible 4" grooved couplings and piping. Always follow manufacturer specs and local code compliance (NFPA, AWWA, etc.) for safe installation.

Explore More Grooved Fittings: Browse our full elbow collection to complete your system.