Value Collection -12148-4 3/4 Inch Npt Square Plug Class 3000

Product Description

The VALUE COLLECTION -12148-4 is a 3/4 inch NPT square plug designed to seal threaded pipe openings in pressurized fluid and gas systems. Machined from forged carbon steel with a black finish, this plug carries a Class 3000 pressure rating, making it suitable for demanding industrial and commercial piping applications. It installs with a standard square-drive or socket tool directly into female NPT-threaded fittings, providing a secure, leak-resistant closure. Plumbers, pipefitters, and mechanical contractors use this type of plug for system isolation, pressure testing, and permanent port sealing.

This square plug is appropriate for use in residential and commercial plumbing, HVAC hydronic systems, compressed air lines, and general industrial piping where NPT threaded connections are standard. The black finish is suited for interior and non-corrosive environments. Each package contains 5 plugs, making it practical for multi-point installations or service truck stocking.

Key Features

• Class 3000 pressure rating with 3000 psi liquid and gas pressure capacity
• Forged carbon steel construction for strength in pressurized systems
• 3/4 inch NPT male thread for direct fit into standard female NPT fittings
• Black finish for clean appearance in interior piping applications
• Square drive head for installation with standard socket tools
• Sold in a pack of 5 for multi-point or stock use

Compatibility

Designed as a standard replacement or new-installation square plug for 3/4 inch female NPT-threaded pipe fittings and manifolds in pressurized liquid and gas piping systems rated to Class 3000.

Installation Notes

Installation is performed by licensed plumbers or pipefitters following applicable IPC and IFGC guidelines. Shut down and depressurize the system fully before removing or installing any threaded plug. Apply an appropriate thread sealant or PTFE tape to the male NPT threads before installation. Do not overtighten; use a torque appropriate to the fitting material and size per job specifications.