Parker A4VC4-MG Inline Check Valve Push-to-connect

Product Description

The PARKER A4VC4-MG is an inline check valve designed for push-to-connect tube fittings with a 1/4 inch outside diameter. It uses a push-to-connect connection on both the inlet and outlet, allowing fast, tool-free installation in fluid or pneumatic lines. The body is molded from acetal and sealed with EPDM elastomers, giving it solid chemical compatibility across a range of water and fluid handling applications. It carries a crack pressure of 0.33 psi, meaning flow initiates at very low differential pressure. Rated to 150 psi maximum working pressure and certified to NSF/ANSI 51 and NSF/ANSI 61, this valve is appropriate for potable water and food equipment contact surfaces.

This check valve is suited for residential and light commercial plumbing, water treatment, filtration, beverage equipment, and similar fluid handling systems where backflow prevention is required in a compact inline configuration. Its white acetal body and NSF dual-certification make it a common choice in drinking water filtration assemblies, reverse osmosis systems, and food service equipment. Licensed plumbers and water treatment technicians are the primary installers, though the push-to-connect design is accessible to knowledgeable service personnel.

Key Features

• Push-to-connect x push-to-connect ends accept 1/4 inch OD tubing with no tools required
• Acetal body construction offers resistance to moisture and common water treatment chemicals
• EPDM seal material provides reliable performance across the rated temperature range
• Low crack pressure of 0.33 psi supports gravity-fed and low-pressure system applications
• Rated to 150 psi maximum working pressure
• NSF/ANSI 51 and NSF/ANSI 61 certified for potable water and food equipment contact use

Compatibility

Designed as an OEM-style inline check valve for push-to-connect tubing systems using 1/4 inch outside diameter tubing, suitable for potable water, filtration, and fluid handling applications requiring NSF-certified components.

Installation Notes

Installation is performed by licensed plumbers or qualified water treatment technicians. Shut off the water supply and depressurize the line before cutting into any existing tubing run. Confirm tube ends are cut cleanly and squarely and that tubing is fully seated in the push-to-connect fittings before restoring pressure. Observe the directional flow marking on the valve body to ensure correct orientation for backflow prevention.