Value Brand 3" FNPT Steel Coupling Class 150 Schedule 40

3-Inch FNPT Steel Coupling

This coupling connects two sections of 3-inch Schedule 40 pipe using female National Pipe Taper threads. It is rated for Class 150 service in standard plumbing and industrial piping systems. The steel construction provides mechanical strength for water, air, and compatible fluid lines. Installers use it to extend or repair threaded pipe runs in commercial and residential settings.

Replaces Damaged Or Corroded Threaded Fittings

When an existing 3-inch coupling leaks, cracks, or seizes, this unit restores the joint without rethreading the entire pipe length. The jump is worth it when the surrounding pipe remains sound and only the coupling needs replacement. It fits standard Schedule 40 dimensions so the repair matches the original system pressure class. No specialty tools are required beyond standard pipe wrenches.

Handles Class 150 Pressure At Standard Temperatures

The fitting comfortably handles the working pressures defined for Class 150 steel couplings in typical plumbing service. Headroom exists for normal pressure surges within the class rating. It runs out when system pressure exceeds the Class 150 limit or when temperatures fall outside the material's safe range. California Proposition 65 warnings apply for chemical exposure during handling and installation.