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The VALUE COLLECTION 4SQ2 is a 2-inch square head pipe plug designed to close off open pipe ends in fluid and gas piping systems. Machined from 304 stainless steel, it provides corrosion resistance in wet and chemically active environments. The male NPT (MNPT) threaded connection ensures a reliable, pressure-rated seal rated to 150 psi. This plug is installed by plumbers, pipefitters, and mechanical contractors during system commissioning, pressure testing, or permanent line termination. The square head drive accepts a standard wrench for straightforward installation and removal without the risk of stripping a slotted or socket drive.
This plug is suited for use in residential and commercial plumbing, hydronic heating, industrial piping, and process systems where a durable, corrosion-resistant pipe termination is required. It is well-suited for stainless steel piping assemblies, sanitary systems, and applications where carbon steel fittings would be subject to accelerated corrosion. Sold individually, it can be used as a service plug or a permanent end cap in 150-class threaded piping systems.
Designed as an OEM-style replacement and general-use fitting for 2-inch MNPT threaded pipe systems rated at 150 psi class.
Installation should be performed by a licensed plumber or pipefitter in accordance with applicable codes such as the International Plumbing Code (IPC) or local authority requirements. De-pressurize and drain the line before removing or installing any threaded fittings. Apply an appropriate thread sealant or PTFE tape to the male threads before engagement. Do not over-torque; use a properly sized wrench on the square head to avoid damaging the fitting or the mating pipe threads.
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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