Asc 8700163150 Malleable Iron Ground Joint Union 1-1/2 in

Product Description

The ASC ENGINEERED SOLUTIONS 8700163150 is a 1-1/2 inch ground joint union made from malleable black iron, designed for joining and disconnecting threaded pipe runs in low-pressure gas, water, and steam piping systems. The black finish provides baseline rust resistance suited to typical mechanical room and utility environments. National Pipe Threads (NPT) on both end connections deliver tighter, more reliable seals than straight threads, making this fitting appropriate for pressurized service lines. Licensed plumbers and pipefitters install this type of union where future disconnection of a pipe run is required without cutting.

This union is used in residential and light commercial piping applications involving black iron pipe. Common installation scenarios include natural gas supply lines, steam heating mains, and general-purpose water piping where a Class 150 malleable iron fitting is specified. The ground joint design allows the union to seat metal-to-metal at the ground face, reducing reliance on thread sealant alone at the union joint.

Key Features

• 1-1/2 inch pipe size with National Pipe Thread (NPT) ends for leak-resistant connections
• Ground joint seat allows metal-to-metal mating at the union face
• Malleable black iron construction rated for Class 150 service
• Black finish for basic corrosion resistance in mechanical and utility environments
• Meets Federal Specification WW-U-531C, ANSI B-16.39 for malleable iron unions
• Meets ANSI B-16.14 dimensional standards and ANSI B-2.1 pipe thread standards

Compatibility

Designed as an OEM-style replacement or new-installation fitting for Class 150 malleable black iron threaded piping systems using 1-1/2 inch NPT pipe.

Installation Notes

Installation is performed by a licensed plumber or pipefitter following applicable codes including the International Fuel Gas Code (IFGC) or International Plumbing Code (IPC) depending on service type. Shut off and depressurize the pipe system completely before disassembling or installing any threaded union. Apply an appropriate thread sealant or tape to NPT connections per the sealant manufacturer and local code requirements. Do not overtighten the union nut, as excessive force can damage the ground joint seat and compromise the seal.