Parker 4F-PR4-VT-B Plug Valve 3000 Psi 1/4 Inch Brass Fnpt

Product Description

The PARKER 4F-PR4-VT-B is a 1/4-inch inline, one-way instrumentation plug valve rated for 3,000 psi working pressure. Built from brass with a Viton seal and a wedge-style handle, this valve is designed for reliable flow isolation in instrumentation and process piping applications. FNPT x FNPT end connections allow direct threaded installation into standard pipe systems. It is typically installed by licensed plumbers, pipefitters, or instrumentation technicians working on fluid or gas control lines where precise shutoff and pressure integrity are critical.

This plug valve is suited for residential and commercial instrumentation lines, process control systems, and hydraulic or pneumatic panel assemblies where a compact, high-pressure shutoff point is needed. The brass body and Viton seal combination handles a range of compatible media, making this valve a practical choice for inline isolation service in tight plumbing and instrumentation manifold configurations.

Key Features

• 3,000 psi maximum working pressure for high-pressure instrumentation service
• Brass body construction offers corrosion resistance in compatible fluid and gas lines
• Viton seal provides durable, chemical-resistant sealing performance
• Wedge-style handle allows positive quarter-turn operation with tactile open/closed indication
• FNPT x FNPT end connections conform to ANSI/ASME B1.20.1 thread standard
• Compact inline design simplifies integration into instrumentation panel and manifold assemblies

Compatibility

Designed as an OEM-style replacement or new-installation plug valve for 1/4-inch FNPT instrumentation and process piping systems rated to 3,000 psi.

Installation Notes

Installation should be performed by a licensed plumber, pipefitter, or qualified instrumentation technician. De-pressurize and isolate the line completely before removing or installing any valve. Apply thread sealant appropriate for the service media to FNPT connections and follow ANSI/ASME B1.20.1 threading guidelines. Do not exceed the rated 3,000 psi working pressure or use this valve with media incompatible with brass or Viton.