Value Collection 13379 Countersunk Hex Plug 1/8 Inch Pipe

Product Description

The VALUE COLLECTION 13379 is a malleable iron countersunk hex plug designed to seal threaded pipe openings in plumbing, HVAC, and general piping systems. Rated for 300 psi with liquid and gas service and 150 psi for steam, this Class 150 fitting handles a wide range of common pipe applications. The countersunk hex design allows the plug to sit flush or below the surface of the fitting boss, making it well-suited for installations where clearance is limited. Plumbers, pipefitters, and HVAC technicians use this plug to cap off unused branch openings or test ports during system assembly and service.

This plug is intended for 1/8 inch threaded pipe connections in residential and light commercial systems. Typical applications include capping lateral tees, closing instrumentation ports, and sealing unused outlets in gas distribution lines, hydronic heating systems, steam lines, and general liquid piping. Its malleable iron construction provides durability and reliable thread engagement in both new construction and retrofit work.

Key Features

• Malleable iron construction for strength and resistance to thread deformation under torque
• 300 psi liquid and gas pressure rating suitable for a broad range of piping systems
• 150 psi steam pressure rating for use in low-pressure steam applications
• Class 150 fitting designation for standard compatibility in threaded pipe assemblies
• Countersunk hex drive allows flush seating where a protruding head is not acceptable
• 1/8 inch pipe size fits common instrument, test, and branch ports

Compatibility

Designed as an OEM-style replacement and standard fitting for 1/8 inch threaded pipe connections in Class 150 malleable iron piping systems.

Installation Notes

Installation is performed by licensed plumbers or pipefitters following applicable IPC and IFGC code requirements. Always depressurize and isolate the pipe section before removing or installing any plug. Apply an appropriate thread sealant or PTFE tape to the male threads before installation. Do not overtighten, as malleable iron threads can crack under excessive torque.