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

Product Description

The PARKER 4Z-PR4-VT-SS is a 1/4 inch inline instrumentation plug valve rated for 3,000 psi WOG service. It is built from 316 stainless steel with a Viton seal and features compression x compression CPI end connections. The wedge handle design allows positive shutoff in a compact, one-way inline configuration. This valve is engineered for high-pressure instrumentation lines where corrosion resistance and reliable isolation are required. Instrumentation fitters and process technicians install this valve in analytical, sampling, and control tubing systems that demand precise flow shutoff and leak-free performance under elevated pressures.

This plug valve is suited for use in industrial instrumentation and process control applications, including chemical processing, oil and gas sampling lines, and high-pressure analytical systems. The 316 stainless steel body resists a wide range of corrosive media, making it appropriate for both aggressive process fluids and inert gas service. CPI compression fittings allow tool-based, repeatable connections to standard instrumentation tubing without welding or threading. It is applicable in both indoor and outdoor installations where process pressures reach up to 3,000 psi WOG.

Key Features

• 316 stainless steel body for high corrosion resistance in process and analytical service
• 3,000 psi WOG maximum working pressure rating
• Viton seal for compatibility with a broad range of process fluids and gases
• Compression x compression CPI end connections for tool-based, tube-fitting installation
• Wedge handle provides positive one-way inline shutoff
• Conforms to ANSI/ASME B1.20.1 standards

Compatibility

Designed as an OEM-style instrumentation plug valve for 1/4 inch compression CPI tubing systems operating at up to 3,000 psi WOG in process control, analytical, and high-pressure sampling line applications.

Installation Notes

Installation should be performed by a qualified instrumentation fitter or process piping technician. Depressurize and isolate the affected line completely before removing or installing the valve. CPI compression connections require proper tube preparation and correct ferrule seating per the fitting manufacturer instructions. Verify system compatibility with Viton seals before installing in contact with aggressive solvents or highly oxidizing media.