Asc 8700163556 1-1/4 in Fpt Malleable Iron Galvanized Union

Product Description

The ASC ENGINEERED SOLUTIONS 8700163556 is a 1-1/4 inch FPT malleable iron galvanized union rated for Class 150 service. It connects two sections of threaded pipe and allows the joint to be broken and reassembled without disturbing the rest of the piping run. The galvanized finish provides corrosion resistance for use in wet or exposed installations. This fitting meets Federal Specification WW-U-531C and is dimensioned to ANSI B-16.39, making it a code-compliant choice for plumbing and mechanical piping systems. Plumbers and pipefitters install this type of union where future serviceability of the line is required.

This union is suited for residential and light commercial plumbing, gas distribution, and mechanical piping applications where 1-1/4 inch female pipe thread connections are specified. It is commonly installed on water supply lines, heating system piping, and gas piping where a removable joint is needed for equipment isolation or future maintenance access. Thread form conforms to ANSI B-2.1, ensuring compatibility with standard NPT-threaded pipe and fittings throughout the system.

Key Features

• 1-1/4 inch FPT connections on both ends for standard NPT threaded pipe
• Malleable iron construction with galvanized finish for corrosion resistance
• Class 150 pressure rating per Federal Specification WW-U-531C
• Dimensioned to ANSI B-16.39 for union geometry and ANSI B-16.14 for overall fitting dimensions
• Threads conform to ANSI B-2.1 for consistent NPT compatibility
• Allows pipeline disassembly without unthreading adjacent pipe sections

Compatibility

Designed as an OEM-style replacement or new-installation fitting for Class 150 malleable iron galvanized piping systems using 1-1/4 inch NPT threaded connections.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local plumbing and mechanical codes. Shut off and depressurize the piping system completely before breaking or making any threaded connections. Apply an appropriate thread sealant or PTFE tape to all male threads before assembly. Do not over-tighten; use a pipe wrench and backup wrench technique to avoid stressing the fitting or adjacent piping.

Technical Specifications

• Connection Size: 1-1/4 inches FPT
• Connection Type: Female Pipe Thread (NPT) both ends
• Material: Malleable Iron, Galvanized
• Pressure Class: Class 150
• Weight: 1.45 pounds
• Standards: Fed. Spec. WW-U-531C, ANSI B-16.39, ANSI B-16.14, ANSI B-2.1
• Sold As: Each

Standard Information

• Brand: ASC ENGINEERED SOLUTIONS
• Manufacturer Part Number: 8700163556