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The MIDLAND INDUSTRIES 64601 is a galvanized malleable iron union rated for 150 lb service at 150 psi. It connects two 1/4-inch female pipe thread (FPT) ends, allowing a piping run to be broken apart and reassembled without disturbing surrounding pipe. Malleable iron construction provides the ductility needed to withstand vibration and mechanical stress in live piping systems. The galvanized finish resists corrosion in exposed or moderately humid environments. At 1.44 inches in length and 0.21 pounds, this is a compact fitting suited for tight-quarters rough-in work. It meets ANSI B 16.3 dimensional standards and is rated for service from -20 to 350 degrees F.
This union is used in residential and light commercial gas, air, and water piping systems wherever a threaded disconnect point is needed. Typical applications include gas appliance connections, compressed air branch lines, and low-pressure water distribution where a service union is required for future maintenance access. The 1/4-inch FPT x FPT configuration fits standard Schedule 40 pipe runs in plumbing and HVAC rough-in installations. Licensed plumbers and pipefitters install this fitting as part of galvanized 150-pound malleable iron piping assemblies.
Designed as an OEM-style replacement and standard service fitting for galvanized 150-pound malleable iron threaded piping systems conforming to ANSI B 16.3.
Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local codes and the International Plumbing Code (IPC) or International Fuel Gas Code (IFGC) where gas service applies. Shut off and depressurize the line completely before disassembling or installing any threaded union. Apply an appropriate thread sealant or PTFE tape to all male threads before assembly. Do not over-tighten the union nut, as excessive torque can crack the seat and compromise the seal.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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