Parker 4M-PR4-VT-SS Plug Valve 3000 Psi 1/4 in Mnpt Ss

Product Description

The PARKER 4M-PR4-VT-SS is a 1/4 inch inline instrumentation plug valve rated for 3,000 psi WOG service. Constructed from 316 stainless steel with a Viton seal, it is designed for one-way flow isolation in high-pressure instrumentation lines and process piping systems. The wedge handle provides positive shutoff with a compact inline form factor. MNPT x MNPT end connections allow direct threaded installation into standard instrumentation manifolds and tubing assemblies. This valve is installed by licensed pipefitters, instrumentation technicians, and industrial plumbers working in process, chemical, oil and gas, and related industries.

This valve is suited for inline isolation service on instrumentation sensing lines, gauge connections, and small-bore process piping where high-pressure shutoff is required. The 316 stainless steel body and Viton seal make it appropriate for mildly corrosive media and elevated-temperature applications where standard carbon steel valves are not acceptable. Its 1/4 inch pipe size fits typical instrument root valve and gauge isolation applications in both industrial and commercial facility environments.

Key Features

• 3,000 psi WOG working pressure rating for high-pressure instrumentation service
• 316 stainless steel body resists corrosion in process and chemical environments
• Viton seal provides compatibility with a broad range of process media and temperatures
• MNPT x MNPT end connections conform to ANSI/ASME B1.20.1 thread standards
• Wedge handle design delivers positive, tactile shutoff confirmation
• Inline one-way flow configuration for straightforward isolation installations

Compatibility

Designed as an OEM-style instrumentation plug valve for 1/4 inch MNPT threaded connections in high-pressure process and instrumentation piping systems rated to 3,000 psi WOG.

Installation Notes

Installation should be performed by a licensed pipefitter or instrumentation technician familiar with high-pressure threaded connections. Depressurize and isolate the line completely before removal or installation of any valve. Apply thread sealant compatible with the process media and Viton seals per ANSI/ASME B1.20.1 practices. Do not exceed the rated 3,000 psi WOG working pressure of the valve body or seal assembly.