Pro-source 3555510084PRO Pressure Bypass Valve Brass Npt

Product Description

The PRO-SOURCE 3555510084PRO is a brass pressure bypass valve designed to regulate and relieve excess pressure in compressed air and fluid control systems. The valve body is machined from brass for corrosion resistance and durability in demanding shop and industrial environments. It uses NPT threading with a 1/2-inch male inlet and a 1/4-inch female outlet, and seals with Buna Nitrile O-rings suited for air and light petroleum-based fluid service. At 0.3 pounds, this compact valve measures 4 inches tall and 3.5 inches in both width and length. Installed by licensed pipefitters, plumbers, and industrial maintenance technicians, it maintains system pressure within safe operating limits by diverting flow when pressure exceeds the set point.

This valve is used in compressed air distribution lines, pneumatic tool supply systems, and hydraulic or fluid transfer circuits where overpressure protection is required. Typical installations include compressor bypass circuits in light industrial and commercial facilities. The 1/2-inch male NPT inlet suits standard shop-air piping, while the 1/4-inch female NPT outlet connects to smaller downstream lines or relief ports. It is packaged individually and suited for both new installation and in-field replacement of worn or failed bypass valves.

Key Features

• Brass valve body resists corrosion in air and light fluid service
• NPT threads on both inlet and outlet for standard pipe fitting compatibility
• 1/2-inch male NPT inlet and 1/4-inch female NPT outlet configuration
• Buna Nitrile O-rings provide reliable sealing against air and petroleum-based fluids
• Compact form factor at 4 inches height and 3.5 inches width and length
• Lightweight at 0.3 pounds for easy handling and installation in tight spaces

Compatibility

Designed as a replacement or new-installation pressure bypass valve for compressed air and fluid control systems using standard 1/2-inch male NPT inlet connections and 1/4-inch female NPT outlet connections.

Installation Notes

Installation should be performed by a qualified pipefitter, plumber, or industrial maintenance technician. Depressurize and lock out the system before removing any existing valve or fitting. Apply thread sealant or PTFE tape to NPT threads per standard trade practice and applicable plumbing or mechanical codes. Do not overtighten brass fittings, as the material is subject to thread damage under excessive torque.