Parker 12A-C12L-1-BN-B Check Valve 3/4 in Compression Brass

Product Description

The PARKER 12A-C12L-1-BN-B is a brass inline check valve with compression x compression end connections, sized for 3/4 inch pipe. It is a spring-loaded, one-directional flow control device that prevents backflow in fluid or gas lines. The valve body is brass with a nitrile rubber seal and stainless steel spring, rated to a maximum working pressure of 3000 psi and a crack pressure of 1.00 psi. It is designed for plumbing, HVAC, and fluid system applications where backflow prevention is required. Licensed plumbers and pipefitters are the primary installers.

This valve is suited for inline installation in residential and commercial systems where compression fittings are the standard connection method. The 3/4 inch pipe size fits common supply and distribution lines in water, hydraulic, and pneumatic systems. The brass body and nitrile rubber seal offer compatibility with a range of fluids, including water and many petroleum-based media, making it a reliable choice for general-purpose backflow prevention across a variety of trade applications.

Key Features

• Brass body construction for corrosion resistance and durability in fluid systems
• Compression x compression end connections for tool-accessible, no-solder installation
• 3000 psi maximum working pressure for high-pressure line service
• 1.00 psi crack pressure for low-resistance, responsive flow initiation
• Nitrile rubber seal compatible with water and petroleum-based fluids
• Stainless steel spring for reliable backflow prevention across temperature cycles

Compatibility

Designed as an OEM-style inline check valve replacement for 3/4 inch compression-connection fluid and gas lines in residential and commercial plumbing or HVAC systems.

Installation Notes

Installation should be performed by a licensed plumber or qualified pipefitter. Shut off and depressurize the system completely before removing the existing valve or making new connections. Confirm flow direction arrow on the valve body aligns with intended flow before tightening compression fittings. Follow applicable local plumbing codes and IPC guidelines for check valve placement and service access.