USA Manufactured FNPT Black Cast Iron Pipe Reducing 125# Threaded Companion Flange

USA Manufactured FNPT Black Cast Iron Pipe Reducing 125# Threaded Companion Flange

USA Manufactured FNPT Black Cast Iron Pipe Reducing 125# Threaded Companion Flanges provide a durable transition between a larger 125-pound-class flanged connection and a smaller threaded pipe size. Manufactured in the United States from quality black cast iron, these industrial fittings combine a drilled flange face with a reduced female National Pipe Taper opening.

The reducing companion flange allows compatible male NPT pipe, nipples, adapters, or equipment connections to join a larger flanged piping system. Its one-piece design eliminates the need for a standard companion flange and separate reducing bushing, helping shorten the assembly, reduce threaded joints, and simplify installation in crowded mechanical spaces.

125# Flanged-to-Threaded Reducing Connection

Black cast iron provides excellent rigidity, dimensional stability, and resistance to ordinary mechanical wear. USA manufactured 125# threaded reducing companion flanges offer consistent dimensions, precision-machined FNPT threads, and accurately positioned bolt holes for professional commercial and industrial piping installations.

The 125# designation identifies the fitting’s flange class and dimensional pattern; it should not automatically be interpreted as the maximum operating pressure under every condition. Allowable pressure depends on fitting size, material, temperature, connected components, and applicable system requirements.

A compatible gasket is installed between mating flange faces, while properly selected bolts and nuts secure the connection. Installers should verify the flange pattern, facing style, reduced thread size, gasket material, and operating conditions before installation.

Industrial Applications and Key Benefits

USA Manufactured FNPT Black Cast Iron Pipe Reducing 125# Threaded Companion Flanges are used in HVAC systems, water piping, pump installations, mechanical rooms, manufacturing facilities, fire-protection systems, and MRO projects.

Key advantages include:

• USA manufactured quality

• Durable black cast iron construction

• 125# flange configuration

• Reduced female NPT opening

• One-piece size transition

• Fewer bushings and adapters required

• Removable bolted connection

• Multiple size combinations available

These reducing companion flanges provide dependable alignment, efficient pipe-size transition, and convenient equipment serviceability.