Bmi Usa 20037 Black Iron Reducer Coupling 1-1/2 X 3/4 Inch Xh

Product Description

The BMI USA 20037 is an extra heavy black malleable iron reducing coupling designed to connect pipes of two different diameters in threaded piping systems. Rated as extra heavy (XH), this fitting provides greater wall thickness and strength compared to standard malleable iron couplings, making it suitable for higher-pressure and more demanding service conditions. The black finish results from an oil coating applied after the casting process, which is standard for malleable iron pipe fittings used in gas, air, and industrial piping applications. Licensed plumbers and pipefitters typically specify extra heavy malleable iron fittings where elevated pressure ratings or mechanical durability are required.

This reducing coupling is used in threaded pipe assemblies where a 1-1/2 inch line must transition down to a 3/4 inch line. Common applications include natural gas distribution piping, compressed air systems, steam systems, and industrial fluid handling. It is installed in both commercial and light industrial settings wherever a Schedule 40 or heavier threaded steel or iron pipe system requires a concentric diameter reduction at a coupling joint.

Key Features

• Extra heavy (XH) wall construction for increased pressure capability and mechanical strength
• Extra heavy malleable iron material provides toughness and resistance to cracking under stress
• Black oil finish standard for gas, air, and industrial piping service
• Reduces from 1-1/2 inch to 3/4 inch in a single threaded fitting
• NPT female threads on both ends for standard threaded pipe connections

Compatibility

Designed as an OEM-style replacement or new-installation fitting for extra heavy threaded malleable iron piping systems requiring a 1-1/2 inch to 3/4 inch concentric reduction.

Installation Notes

Installation is performed by a licensed plumber or pipefitter following applicable code requirements such as IFGC or ASME B16.3 for malleable iron fittings. Shut off and depressurize the piping system completely before removing or installing any threaded fittings. Apply an appropriate thread sealant or PTFE tape rated for the service medium to all male threads before assembly. Do not over-tighten threaded joints; follow standard trade practice for thread engagement on NPT connections.

Technical Specifications

• Material: Extra Heavy Malleable Iron
• Finish: Black
• Inlet Size: 1-1/2 inches
• Outlet Size: 3/4 inches
• Weight: 1.38 pounds

Standard Information

• Brand: BMI USA
• Manufacturer Part Number: 20037