Anvil 0308006907 Cast Iron Reducing Companion Flange Class 125 1 in Flanged x FNPT 175 psi

Cast Iron Reducing Companion Flange

This Anvil 0308006907 reducing companion flange connects a flanged pipe end to a female NPT threaded pipe in plumbing and drainage systems. Rated for 175 psi at temperatures from -20 to 150 degrees F, it suits water, oil or gas lines within that pressure and temperature range. The Class 125 cast iron body meets ASME B16.4 and carries UL and FM approvals for code-compliant installations.

Upgrade from plain threaded couplings

Threaded couplings rely on sealant and thread engagement alone, which can loosen under vibration or thermal cycling. This flange adds a bolted joint with four holes on a six-inch outside diameter, distributing load evenly and allowing disassembly without cutting pipe. The jump is worth it when the system requires a rigid, inspectable connection that can be broken for maintenance or equipment changes.

Fits flanged-to-threaded transitions

The flanged face bolts to a mating Class 125 flange with a full-face gasket, while the FNPT end accepts standard male NPT pipe or fittings. No special tools beyond a flange bolt kit and pipe wrenches are required. It frees the installer from welding or grooving the pipe, saving time on retrofit jobs where the existing line is already threaded. Not for systems exceeding 175 psi or 150 degrees F, or where a larger pipe size is needed.