Asc D.NMC 1/2 Inch Fnpt Straight Pipe Coupling 150 Lb Galvanized

Product Description

The ASC Engineered Solutions D.NMC is a straight pipe coupling designed for joining two sections of threaded pipe in a continuous run. Rated at 150 lb, it features female National Pipe Taper (FNPT) threads on both ends for a secure, leak-resistant connection. Constructed from malleable iron with a galvanized finish, the D.NMC resists corrosion in exposed or wet environments. With a 1/2 inch nominal pipe size, this fitting is well suited for gas, water, and air distribution systems in both residential and light commercial applications. It is installed by licensed plumbers, HVAC technicians, and pipefitters working on threaded iron piping systems.

This coupling is used wherever a straight threaded connection is needed to extend or repair a 1/2 inch iron pipe run. Common install scenarios include natural gas distribution lines, compressed air systems, and potable or non-potable water supply piping. The galvanized coating provides added protection in utility rooms, mechanical spaces, and outdoor service environments where moisture and corrosion are concerns.

Key Features

• 150 lb pressure-rated malleable iron construction for durable, long-service performance
• Galvanized finish provides corrosion resistance in wet or exposed environments
• FNPT threads on both ends for standard threaded iron pipe connections
• 1/2 inch nominal pipe size covers common residential and light commercial piping runs
• Domestically sourced fitting suitable for gas, air, and water service

Compatibility

Designed as an OEM-style replacement or new-install fitting for 1/2 inch nominal threaded iron pipe systems rated at 150 lb or lower working pressure.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local codes, including the International Plumbing Code (IPC) or International Fuel Gas Code (IFGC) where relevant. Shut off and depressurize the line completely before removing or installing any threaded fittings. Apply an approved pipe thread sealant or PTFE tape to the male threads before making up the joint. Do not over-tighten; use a pipe wrench to achieve a firm, leak-free connection without stressing the fitting body.

Technical Specifications

• Nominal Pipe Size: 1/2 inch
• End Style: FNPT (Female National Pipe Taper) both ends
• Pressure Rating: 150 lb
• Material: Malleable Iron
• Finish: Galvanized
• Configuration: Straight Coupling
• Origin: Domestic

Standard Information

• Brand: ASC Engineered Solutions
• Manufacturer Part Number: D.NMC