Asc Engineered Solutions 1DX1B.NMC Reducing Coupling 1-1/2x1-1/4 in

Product Description

The ASC Engineered Solutions 1DX1B.NMC is a malleable iron galvanized pipe reducing coupling designed to connect two pipe segments of different nominal diameters within a threaded piping system. Rated at 150 lb, it transitions from a 1-1/2 inch nominal pipe on one end to a 1-1/4 inch nominal pipe on the other. Both ends feature female NPT (FNPT) threads for standard threaded engagement. Galvanized finish provides corrosion resistance for use in wet or moderately corrosive service environments. This fitting is domestically manufactured and suited for use by licensed plumbers and pipefitters working on water, gas, and air distribution systems.

This reducing coupling is used in residential and light commercial piping installations where a threaded line must step down from 1-1/2 inch to 1-1/4 inch nominal pipe. Typical applications include supply water lines, low-pressure steam distribution, compressed air systems, and natural gas piping where code-approved malleable iron fittings are required. The galvanized coating makes it a practical choice for exposed or damp installations in mechanical rooms, crawl spaces, and utility areas.

Key Features

• Malleable iron construction rated at 150 lb for reliable performance in standard-pressure threaded systems
• Galvanized finish provides corrosion resistance in wet and moderately corrosive service environments
• FNPT threads on both ends for straightforward engagement with standard NPT pipe and fittings
• Reduces from 1-1/2 inch nominal to 1-1/4 inch nominal in a single inline fitting
• Domestically manufactured to support traceability and quality assurance requirements

Compatibility

Designed as an OEM-style replacement or new-installation fitting for standard 150 lb malleable iron threaded piping systems using 1-1/2 inch and 1-1/4 inch nominal NPT pipe.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local codes, the International Plumbing Code (IPC), or the International Fuel Gas Code (IFGC) as applicable to the service. Shut off and depressurize the piping system fully before cutting into any existing line. Apply an appropriate thread sealant or PTFE tape to the male threads before engagement, and tighten to a snug fit without overtightening to avoid cracking the fitting. Do not use in systems or with fluids outside the rated pressure and temperature range for 150 lb malleable iron fittings.

Technical Specifications

• Nominal Size: 1-1/2 x 1-1/4 inches
• End Style: FNPT (Female National Pipe Thread) both ends
• Pressure Rating: 150 lb
• Material: Malleable Iron
• Finish: Galvanized
• Origin: Domestic

Standard Information

• Brand: ASC Engineered Solutions
• Manufacturer Part Number: 1DX1B.NMC