Parker 4M-PR4-VT-B Plug Valve 3000 Psi 1/4 Inch Brass Mnpt

Product Description

The PARKER 4M-PR4-VT-B is a brass inline instrumentation plug valve rated for 3,000 psi WOG (water, oil, gas) service. It features a wedge handle and Viton seals, making it well suited for applications where chemical compatibility and reliable shutoff are critical. The valve is configured as a one-way, single-port design with male NPT connections on both ends, conforming to ANSI/ASME B1.20.1 thread standards. Instrumentation technicians and pipefitters install this valve where precise flow isolation is needed on small-bore instrument lines.

This plug valve is used in industrial instrumentation systems, hydraulic lines, and process piping where 1/4 inch pipe connections are required. Its brass body and Viton seals make it appropriate for a range of fluid and gas media in both light industrial and commercial settings. The inline configuration simplifies installation in tight-space instrument manifolds and sampling lines where compact, reliable isolation valves are standard practice.

Key Features

• 3,000 psi WOG pressure rating for demanding instrumentation and process service
• Brass body construction for corrosion resistance in fluid and gas applications
• Viton seals provide broad chemical compatibility across common process media
• Wedge handle design allows positive, tactile quarter-turn shutoff confirmation
• MNPT x MNPT end connections conform to ANSI/ASME B1.20.1 thread standards
• Compact inline form factor suits tight instrumentation panel and manifold installations

Compatibility

Designed as an OEM-style inline instrumentation plug valve for 1/4 inch male NPT pipe connections in industrial instrumentation, process control, and small-bore fluid or gas piping systems.

Installation Notes

Installation is typically performed by a licensed pipefitter or instrumentation technician. Depressurize and drain the line completely before removing or installing any valve. Apply thread sealant or PTFE tape to male NPT threads in accordance with site procedures and applicable ASME or local piping codes. Do not exceed the rated 3,000 psi working pressure, and verify fluid and temperature compatibility with the brass body and Viton seals before placing the valve in service.