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The VALUE COLLECTION PC122NB-8 is a brass hex pipe plug used to cap or close off a 1/2-inch threaded pipe line. The plug features a male NPT (MNPT) external thread on the body and a female NPT (FNPT) internal thread at the hex head, allowing it to accept a test gauge or secondary connection while still sealing the line. It carries a pressure rating of 1,000 psi, making it suitable for moderate-pressure fluid and gas piping systems. A nickel-plated finish provides added corrosion resistance over bare brass. Plumbers, pipefitters, and HVAC technicians install this plug when capping off branches, plugging test ports, or closing unused tee outlets during system buildout or maintenance.
This hex plug is suited for residential and light commercial plumbing, hydronic heating, compressed air, and similar low-to-moderate-pressure piping applications. The 1/2-inch NPT size is one of the most common thread sizes encountered in residential pipe runs, hydronic manifolds, and HVAC equipment connections. The hex head allows engagement with a standard open-end or adjustable wrench for proper installation torque without slipping.
Designed as a standard 1/2-inch NPT threaded plug compatible with brass, copper, steel, and other NPT-threaded pipe systems rated within the 1,000 psi working pressure limit.
Installation is performed by licensed plumbers, pipefitters, or qualified HVAC technicians following applicable IPC or IFGC guidelines. Depressurize and drain the affected pipe section before removing any existing fittings or installing this plug. Apply an appropriate thread sealant tape or paste to the male threads prior to installation. Do not overtighten; hand-snug and then wrench-tighten to seat the threads without cracking the fitting body.
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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