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The PARKER 8M-PR6-VT-B is a 1/2 inch brass inline instrumentation plug valve rated for 3,000 psi WOG service. It is a one-way, quarter-turn valve designed for precise flow shutoff in instrumentation and process piping systems. The valve features male NPT connections on both ends, a wedge-style handle for positive actuation, and a Viton seal for compatibility with a wide range of process fluids. Threads conform to ANSI/ASME B1.20.1 standards. Licensed plumbers, pipefitters, and instrumentation technicians install this valve in oil and gas, chemical, and industrial process lines where reliable, leak-tight shutoff at elevated pressures is required.
This valve is suited for inline instrumentation applications in both commercial and industrial settings. Typical installations include gauge isolation, sample point connections, and instrument manifold assemblies where compact, high-pressure shutoff is needed. The MNPT x MNPT end connections make it straightforward to thread into existing pipe runs or instrument port assemblies. The Viton seal extends service life when the valve is exposed to hydrocarbons, solvents, or other aggressive media.
Designed as an OEM-style instrumentation plug valve for 1/2 inch male NPT process and instrumentation piping assemblies requiring a 3,000 psi WOG-rated shutoff valve.
Installation should be performed by a licensed pipefitter, plumber, or qualified instrumentation technician. Depressurize and isolate the line completely before removing any existing valve or fitting. Apply appropriate thread sealant to the MNPT threads per system fluid compatibility requirements and torque to standard NPT engagement depth per ANSI/ASME B1.20.1. Verify there are no leaks before returning the system to service pressure.
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