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The ASC Engineered Solutions 8700133609 is a 3/4-inch FPT x 3/4-inch FPT galvanized malleable iron coupling designed for joining two sections of threaded pipe in a straight run. Malleable iron construction provides the ductility needed to withstand mechanical stress and vibration in service. The hot-dip galvanized coating adds corrosion resistance, making this fitting appropriate for exposed or mildly corrosive environments. Licensed plumbers and pipefitters install this fitting in gas distribution, water supply, and general-purpose piping systems where a standard full-coupling connection is required.
This coupling is used in residential and light commercial piping installations where 3/4-inch NPT threaded pipe is present. Typical applications include natural gas supply lines, steam systems, compressed air distribution, and water piping. The female pipe thread on both ends accepts standard NPT-threaded pipe or nipples. Its straight-through design makes it suitable for inline connections where no directional change is needed.
Designed as an OEM-style replacement or new-installation fitting for 3/4-inch NPT threaded pipe systems in residential and light commercial plumbing, gas, steam, and compressed air applications.
Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local plumbing and mechanical codes, including IPC and IFGC requirements where relevant. Shut off and depressurize the pipe system completely before removing or installing any fitting. Apply an appropriate thread sealant or PTFE tape to the male pipe threads before assembly, and tighten with a pipe wrench to a snug, leak-free fit without overtightening. Pressure-test the completed joint before returning the system to service.
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