Value Collection 4SQ1/2 Square Head Pipe Plug 1/2 in Mnpt

Product Description

The VALUE COLLECTION 4SQ1/2 is a 1/2 inch square head pipe plug designed to close off threaded pipe ends in fluid and gas distribution systems. Manufactured from 304 stainless steel, this plug offers solid corrosion resistance suitable for a wide range of service environments. It uses a male NPT (MNPT) threaded connection and is rated to 150 psi. Plumbers, pipefitters, and mechanical contractors install these plugs during pressure testing, system isolation, and permanent pipe termination work. The square head drive profile accommodates standard wrenches for reliable torque without slippage.

This plug is suited for residential and light commercial plumbing, HVAC hydronic piping, and industrial pipe systems where a threaded end closure is required. The 1/2 inch MNPT size fits standard half-inch female NPT fittings and pipe ports. It is a common stock item used during rough-in, testing phases, and final system commissioning. The 304 stainless steel construction makes it appropriate for water, mild chemical, and general-purpose service lines where carbon steel plugs would be susceptible to corrosion.

Key Features

• 304 stainless steel construction for corrosion resistance in wet and chemical-exposed environments
• 1/2 inch MNPT threaded connection for direct installation into standard female NPT fittings
• 150 psi pressure rating suitable for typical low-pressure plumbing and piping applications
• Square head drive profile accepts standard wrenches for secure, controlled installation
• Compact profile for use in tight or recessed pipe termination points

Compatibility

Designed as an OEM-style replacement and standard stock fitting for any piping system using 1/2 inch female NPT threaded connections rated at 150 psi or below.

Installation Notes

Installation is performed by licensed plumbers or pipefitters following applicable IPC and IFGC code requirements for the specific service medium. Always depressurize and isolate the line before installing or removing threaded plugs. Apply appropriate thread sealant or PTFE tape to the male threads before installation. Do not overtighten; use a properly sized wrench on the square head to achieve a leak-free seal without damaging the fitting or mating threads.