Value Collection B-PLG05 Black Square Plug 1/2 in Malleable Iron

Product Description

The VALUE COLLECTION B-PLG05 is a black malleable iron square plug used to close off threaded pipe openings in plumbing, gas, and fluid-handling systems. Sized at 1/2 inch with NPT-threaded end connections, this Class 150 fitting carries a pressure rating of 300 psi, making it suitable for both liquid and gas service. The black finish is standard for malleable iron pipe fittings used in gas distribution and industrial piping. Plumbers, pipefitters, and HVAC technicians install this type of plug when capping unused ports or outlets during system modifications or repairs.

This square plug is used in residential and light commercial piping systems where a threaded 1/2 inch port requires a secure, pressure-rated closure. Common applications include capping unused tee outlets on gas lines, closing off pipe ends during pressure testing, and sealing branch connections that are not yet in service. The square head design allows for easy installation and removal with a standard pipe wrench or adjustable wrench without the need for specialty tools.

Key Features

• Class 150 malleable iron construction rated to 300 psi for liquid and gas service
• 1/2 inch threaded end connection for standard NPT pipe fitting compatibility
• Square head design for reliable wrench engagement during installation and removal
• Black finish consistent with standard gas and industrial pipe fitting applications
• Compact, single-piece fitting with no moving parts or gaskets to fail

Compatibility

Designed as an OEM-style replacement and standard-fit component for 1/2 inch NPT threaded pipe systems in plumbing, gas distribution, and industrial fluid-handling applications rated at Class 150 or lower.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local codes, the International Plumbing Code (IPC), or the International Fuel Gas Code (IFGC) for gas applications. Shut off the gas or fluid supply and depressurize the line before installing or removing any threaded fitting. Apply an appropriate thread sealant or PTFE tape to the male threads before installation. Do not overtighten, as this can crack the fitting or damage the female threaded port.