Galvanized Reducing Coupling – FNPT x FNPT

The Galvanized Reducing Coupling joins two female-threaded (FNPT) pipes of different sizes in a single, leak-resistant connection. Made from hot-dip galvanized malleable iron, it resists corrosion and rust, making it a dependable choice for compressed-air lines, water, and other low-pressure plumbing where a larger pipe needs to step down to a smaller one. Key Specifications Type: Reducing coupling, FNPT x FNPT (female threads both ends) Material: Galvanized malleable iron Finish: Hot-dip zinc galvanized for corrosion resistance Class: 150 (standard duty) Max working pressure: Up to 300 PSI at ambient temperature Sizes: 1/4" x 1/8" through 3" x 2-1/2" (24 size combinations) Typical Applications Compressed-air distribution lines, shop and plant air piping, water supply, irrigation, and general low-pressure pipe work where two different pipe sizes must be joined. Select your required size combination from the dropdown. Each galvanized reducing coupling is threaded FNPT on both ends for a secure, reusable connection — a durable, corrosion-resistant fitting for air compressor plumbing and general-purpose pipe runs.