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The ASC ENGINEERED SOLUTIONS 8700163358 is a 3/8-inch female pipe thread (FPT) malleable iron galvanized union rated for Class 150 service. This fitting connects two sections of threaded pipe while allowing for easy disconnection without cutting or rotating the line. The galvanized finish provides corrosion resistance for use in wet or exposed environments. Manufactured to meet Federal Specification WW-U-531C and ANSI B-16.39 for malleable iron unions, it is a standard choice for licensed plumbers and pipefitters working on low-pressure piping systems in residential and light commercial applications.
This union is suited for use in water supply, gas distribution, and general-purpose threaded piping systems where periodic disassembly of a line is required. The 3/8-inch FPT connections on both ends accept standard NPT-threaded pipe. It is commonly installed in boiler rooms, mechanical rooms, and utility piping runs where code-compliant, durable fittings are required. Sold individually.
Designed as an OEM-style replacement or new-installation fitting for 3/8-inch NPT threaded piping systems in residential and light commercial plumbing, hydronic heating, and general mechanical piping applications.
Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local codes and IPC or IFGC requirements. Depressurize and drain the piping system completely before removing or installing any union. Apply thread sealant or PTFE tape to all male threads before assembly, and hand-tighten before using a pipe wrench to seat the union nut. Do not over-torque malleable iron fittings, as the material is susceptible to cracking under excessive force.
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