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The MIDLAND INDUSTRIES 103412 is a full coupling fitting machined from 304L stainless steel for use in high-pressure piping systems. It provides a female-to-female threaded connection in a 3/8 in FPT x 3/8 in FPT configuration and is rated to a 3000 lb pressure class. The 3/8-18 thread form follows standard NPT taper requirements. At 0.13 pounds and measuring 1.4 inches in length with a 0.85-inch height and 0.85-inch width, the fitting is compact and well-suited for tight installations. Plumbers, pipefitters, and industrial maintenance technicians install this type of coupling to join two threaded pipe ends in a straight run.
This coupling is designed for use in industrial, commercial, and mechanical piping applications where corrosion resistance and elevated pressure ratings are required. The 304L stainless steel construction makes it appropriate for systems handling water, steam, oil, air, and a range of mild chemicals. It fits into the 3000 lb pressure class category, placing it in service alongside high-pressure valves, nipples, and fittings common in process piping and mechanical rooms.
Designed as an OEM-style replacement or new-installation fitting for 3/8 in NPT threaded piping systems rated to 3000 lb pressure class in industrial and mechanical applications.
Installation should be performed by a licensed plumber or pipefitter in accordance with applicable mechanical and plumbing codes such as the IPC or ASME B31.3 for process piping. Depressurize and isolate the line before threading any fitting. Apply an appropriate thread sealant or PTFE tape to the male threads being engaged, not to the female threads of the coupling. Avoid over-torquing, as stainless steel fittings are susceptible to galling if driven without proper lubrication or sealant.
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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