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

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

USA Manufactured FNPT Black Cast Iron Pipe Threaded Companion 125# Flanges provide a durable, serviceable transition between threaded pipe and compatible flanged valves, pumps, strainers, meters, tanks, and industrial equipment. Manufactured in the United States from quality black cast iron, these fittings feature a precision-machined female National Pipe Taper opening and a drilled 125-pound-class flange face.

The FNPT center opening threads directly onto compatible male NPT pipe, pipe nipples, or threaded adapters. The flange face connects to a matching 125# flange or flanged component using an appropriate gasket, bolts, and nuts. This configuration creates a removable threaded-to-flanged connection that supports convenient equipment installation, maintenance, and replacement.

Durable 125# Threaded-to-Flanged Connection

Black cast iron provides excellent rigidity, dimensional stability, and resistance to ordinary mechanical wear. USA manufactured black cast iron threaded companion flanges offer consistent dimensions, dependable FNPT thread quality, and accurate bolt-hole alignment for professional commercial and industrial piping installations.

The 125# designation identifies the flange class and dimensional pattern. It should not automatically be interpreted as a universal 125 PSI operating limit. Actual allowable pressure depends on flange size, material, operating temperature, gasket selection, connected components, and system requirements.

Installers should confirm the nominal pipe size, flange pattern, facing style, bolt dimensions, pressure capability, gasket material, and thread compatibility before installation.

Industrial Applications and Product Benefits

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

Key product advantages include:

• USA manufactured quality and consistency

• Durable black cast iron construction

• Precision-machined female NPT opening

• 125# drilled flange configuration

• Connects threaded pipe to flanged equipment

• Removable, serviceable bolted joint

• Multiple nominal pipe sizes available

• Simplifies equipment inspection and replacement

These threaded companion flanges provide dependable alignment, convenient system access, and long-lasting industrial piping performance.