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The VALUE COLLECTION 4HP11/2 is a 1-1/2 inch hex plug designed to seal off pipe ends in threaded piping systems. Machined from 304 stainless steel, it provides corrosion resistance suitable for plumbing, industrial, and mechanical piping applications. The male NPT (MNPT) threaded end connects directly into a female-threaded fitting or pipe, creating a secure, leak-resistant closure rated to 150 psi. At 1-7/32 inches in length, the plug sits compact within the line. Licensed plumbers and pipefitters are the primary installers, though experienced trades across HVAC and industrial maintenance regularly work with fittings of this type.
This hex plug is suited for residential and light commercial piping systems where a reliable threaded end cap is required. Common install scenarios include capping unused branch outlets, closing off test ports, and sealing dead-end runs in water supply, compressed air, or process piping lines. The hex head allows standard wrench engagement for consistent torque without damage to the fitting body.
Designed as an OEM-style replacement or new-installation hex plug for 1-1/2 inch female NPT-threaded pipe connections in standard 150-class threaded piping systems.
Installation is performed by licensed plumbers or pipefitters in accordance with applicable IPC and local plumbing code requirements. Depressurize and drain the affected piping section before removing or installing any threaded plug. Apply thread sealant tape or pipe dope to the MNPT threads before engagement to ensure a leak-free seal. Use a properly sized pipe wrench or hex socket to tighten — do not over-tighten stainless steel threaded fittings, as galling can occur.
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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