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The MIDLAND INDUSTRIES 105770 is a 3000 lb half coupling designed for high-pressure piping systems where corrosion resistance and structural integrity are critical. Constructed from 316 stainless steel, it features a 1/8 in female pipe thread (FPT) connection with a 1/8-27 thread specification. Half couplings are used to branch off a main pipe run or to close a tapped opening, and they are a standard component in instrumentation, process piping, and industrial fluid systems. At 0.07 pounds, this is a compact, lightweight fitting suited for tight-space installations where full couplings are not required.
This fitting is appropriate for residential and commercial plumbing, HVAC hydronic systems, industrial process lines, and gas distribution applications where 316 stainless steel is specified for its resistance to chloride and chemical corrosion. Licensed plumbers, pipefitters, and mechanical contractors working in corrosive or high-pressure environments commonly specify 3000 lb class fittings to meet system pressure and code requirements. The 1/8 in FPT size is frequently used on instrument taps, gauge connections, and small-bore branch lines.
Designed as an OEM-style replacement or new-installation fitting for 1/8 in female pipe thread connections in 3000 lb class stainless steel piping systems.
Installation should be performed by a licensed plumber or pipefitter in accordance with applicable mechanical and plumbing codes. Shut off and depressurize the piping system completely before threading or removing any fitting. Use appropriate pipe thread sealant or PTFE tape rated for the service media and pressure class. Do not over-torque stainless steel fittings, as galling can occur on threaded connections.
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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