Parker 4A-C4L-1-SS Check Valve 1/4 in Comp X Comp Ss

Product Description

The PARKER 4A-C4L-1-SS is a stainless steel inline check valve designed for high-pressure fluid and gas systems where backflow prevention is critical. Built with a compression x compression end connection and a 1/4 inch pipe size, it installs into tight plumbing runs without the need for threaded fittings. The valve carries a maximum working pressure rating of 6,000 psi WOG (water, oil, gas) and opens at a crack pressure of 1 psi, making it suitable for systems that require low-resistance forward flow with reliable reverse shutoff. Both the body and spring are stainless steel, providing corrosion resistance in demanding service environments.

This check valve is used in industrial, HVAC, and process plumbing applications where high-pressure inline backflow prevention is required. Its compact inline design and compression fittings make it a practical choice for instrument tubing, refrigeration, hydraulic, and pneumatic circuits. Licensed plumbers, pipefitters, and HVAC technicians typically specify this valve in systems handling water, oil, or gas at elevated pressures. The 1/4 inch pipe size suits smaller-diameter tubing runs common in instrumentation and control line installations.

Key Features

• 6,000 psi maximum working pressure rating suitable for high-pressure WOG service
• 1 psi crack pressure allows low-resistance forward flow in sensitive systems
• Stainless steel body and spring construction for corrosion resistance
• Compression x compression end connections for tool-accessible installation without soldering or threading
• Inline configuration simplifies integration into existing tubing runs

Compatibility

Designed as an OEM-style inline check valve replacement for high-pressure plumbing, instrumentation, and process systems using 1/4 inch compression fittings.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local codes and IPC guidelines. Depressurize and isolate the system completely before removing the existing valve or installing this unit. Verify that tubing ends are cleanly cut and deburred before seating the compression fittings to ensure a leak-free connection. Confirm the flow direction arrow on the valve body is oriented correctly within the line before final torque-up of fittings.