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

Product Description

The PARKER 4A-PR4-VT-SS is a one-way inline instrumentation plug valve designed for high-pressure fluid and gas control in industrial and process systems. Built from 316 stainless steel, it handles working pressures up to 3,000 psi WOG and accepts 1/4 inch pipe connections. The valve features a Viton seal for compatibility with a wide range of process media and uses a wedge-style handle for positive shutoff. This type of valve is typically installed by instrumentation technicians, pipefitters, and licensed plumbers working on process lines, test manifolds, and instrument isolation applications.

This plug valve is suited for inline isolation duty on instrumentation tubing and small-bore process pipe in both industrial and commercial settings. Its compact form factor and 1/4 inch pipe end connections make it a practical choice for tight panel and manifold installations where reliable one-way shutoff is required. Typical applications include pressure measurement isolation, sample point control, and chemical process lines where corrosion resistance and leak-tight sealing are critical.

Key Features

• 316 stainless steel body for corrosion resistance in aggressive process environments
• 3,000 psi WOG maximum working pressure rating
• Viton seal for broad chemical compatibility
• Wedge handle design for positive, tactile shutoff confirmation
• 1/4 inch pipe connection per ANSI/ASME B1.20.1 thread standard
• Inline one-way configuration for straightforward in-line installation

Compatibility

Designed as an OEM-style instrumentation plug valve for 1/4 inch pipe systems rated to 3,000 psi WOG, conforming to ANSI/ASME B1.20.1 thread specifications.

Installation Notes

Installation should be performed by a licensed pipefitter or instrumentation technician. Isolate and depressurize the system fully before removing or installing any valve. Apply appropriate thread sealant or PTFE tape per site procedures and applicable piping codes. Verify system pressure and media compatibility with the Viton seal before returning the line to service.