Nibco B515306 Cast Copper Threaded Companion Flange

Product Description

The NIBCO B515306 is a cast copper threaded companion pipe flange designed for use in pressure piping systems where a reliable, leak-resistant flanged connection is required. It accepts a 2-inch pipe with a 6-inch outer diameter and is rated at 150 psi, making it suitable for a broad range of commercial and industrial plumbing applications. The threaded F end connection allows straightforward installation onto male-threaded pipe ends without the need for welding or soldering. Weighing 4.13 pounds, this flange meets ASME B16.24 standards for cast copper alloy pipe flanges and flanged fittings, ensuring conformance to recognized industry specifications. Licensed plumbers and pipefitters are the typical installers for this component.

This flange is used in wet piping systems where copper or copper-alloy fittings are specified, including domestic water supply, heating, and light industrial process lines. Its threaded companion design allows it to be paired with a mating flange to create a bolted joint at equipment connections, pump inlets, valve bodies, or service entry points. The 4-3/4-inch across-bolt-hole-center dimension is consistent with ASME B16.24 Class 150 bolt patterns. It is appropriate for both new construction and retrofit service on 2-inch copper piping systems.

Key Features

• Cast copper construction meets ASME B16.24 standards for pipe flanges and flanged fittings
• Class 150 pressure rating at 150 psi for use in low-to-medium pressure piping systems
• Threaded F end connection for installation on male-threaded 2-inch pipe ends
• 6-inch outer diameter with 4-3/4-inch across-bolt-hole centers for standard bolt-pattern alignment
• Companion flange style designed to mate with a corresponding flange at equipment or isolation points

Compatibility

Designed as an OEM-style replacement or new-installation component for 2-inch Class 150 threaded copper pipe flange applications conforming to ASME B16.24.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local codes and ASME piping standards. Shut off and depressurize the system fully before removing any existing flange or fitting. Apply an appropriate thread sealant to the male pipe threads before engagement, and torque the bolted joint evenly in a cross pattern to achieve uniform gasket compression. Do not exceed the Class 150 pressure rating of this flange in service.