Dixon Valve Coupling 1760404C Brass Hex Plug 1/4 in Mnpsm

Product Description

The DIXON VALVE COUPLING 1760404C is a brass hex plug designed to seal open pipe ends in fluid and gas distribution systems. Threaded with a 1/4 inch NPSM male thread, it provides a secure, pressure-rated closure for pipe lines, manifolds, and fittings. The hex body allows standard wrench engagement for reliable installation and removal. Rated to 1,000 psi maximum working pressure, this plug suits moderate- to high-pressure applications in industrial and commercial plumbing, pneumatic, and hydraulic systems. Plumbers, pipefitters, and industrial maintenance technicians install this type of fitting as part of routine system assembly, testing, or temporary line capping.

This hex plug is suited for use in pipe systems where an open port or branch connection requires a threaded closure. Common applications include capping unused tee outlets, sealing manifold ports, and pressure-testing pipe runs. The NPSM thread form is a straight mechanical thread and is typically used in applications where a mechanical seal rather than a tapered thread seal is specified. Compatible with air, water, oil, and other media appropriate for brass fittings.

Key Features

• 1,000 psi maximum working pressure rating
• 1/4 inch MNPSM male thread for positive mechanical engagement
• Brass construction for corrosion resistance in fluid and pneumatic systems
• Hex body profile accepts standard wrenches for controlled installation
• Lightweight at 0.1 pounds, minimal added load to the assembly

Compatibility

Designed as an OEM-style replacement or standard service fitting for pipe systems using 1/4 inch NPSM-threaded ports and connections.

Installation Notes

Installation should be performed by a licensed plumber or qualified pipefitter. Depressurize and isolate the pipe line completely before installing or removing any threaded plug. NPSM is a straight thread; use an appropriate thread sealant or O-ring at the fitting face to achieve a pressure-tight seal, as straight threads do not self-seal by taper. Do not overtighten brass fittings, as brass is softer than ferrous fittings and cross-threading or cracking can result from excessive torque.