Wilkins 12-975XL3 Backflow Preventer 1/2 Inch Fnpt

Product Description

The WILKINS 12-975XL3 is a reduced pressure zone (RPZ) backflow preventer designed to protect potable water supplies from contamination caused by backpressure or backsiphonage. Built with a lead free cast bronze body, it is rated for installation in residential and commercial plumbing systems where code requires high-hazard backflow protection. The 1/2 inch nominal size with female NPT (FNPT) end connections makes it straightforward to thread into existing supply lines. Quarter-turn ball valves are integrated on both the inlet and outlet, allowing fast shutoff during testing or service without additional isolation valves.

This backflow preventer is suited for protecting irrigation systems, boiler makeups, chemical feed lines, and other cross-connection points where a reduced pressure principle assembly is required by the authority having jurisdiction. The compact 1/2 inch configuration fits tight mechanical rooms and residential utility spaces. A licensed plumber or backflow prevention specialist typically installs and performs the required annual certification testing on this style of assembly.

Key Features

• Reduced pressure zone design provides high-hazard backflow protection per ASSE 1013 assembly standards
• Lead free cast bronze body meets state and federal lead-free plumbing requirements
• 1/2 inch nominal FNPT end connections for direct threaded installation
• Integrated quarter-turn ball valves on inlet and outlet for quick field shutoff
• Compact form factor suitable for residential and light commercial applications

Compatibility

Designed as an OEM-style reduced pressure zone backflow preventer for 1/2 inch nominal FNPT threaded plumbing systems requiring high-hazard cross-connection control.

Installation Notes

Installation must be performed by a licensed plumber or certified backflow prevention technician in accordance with local plumbing codes and IPC cross-connection control requirements. Shut off the water supply and relieve system pressure before threading the assembly into the line. The unit must be installed in the orientation specified by the manufacturer, typically horizontal with the relief valve port facing downward, and must remain accessible for annual testing. Do not install downstream of a check valve that would prevent a required differential pressure relief discharge.

Technical Specifications

• Nominal Size: 1/2 inch
• End Style: FNPT (Female National Pipe Thread)
• Body Material: Lead Free Cast Bronze
• Valve Type: Quarter-Turn Ball Valve
• Backflow Prevention Type: Reduced Pressure Principle (RPZ)

Standard Information

• Brand: WILKINS
• Manufacturer Part Number: 12-975XL3