Wilkins 112-975XL Reduced Pressure Backflow Preventer

Product Description

The WILKINS 112-975XL is a 1.5-inch reduced pressure zone (RPZ) backflow preventer designed to protect potable water supplies from contamination caused by backpressure or back-siphonage. RPZ assemblies use two independently acting check valves separated by a pressure differential relief valve, providing the highest level of mechanical backflow protection available. This unit is sized for 1.5-inch pipe and is intended for commercial, industrial, and municipal plumbing applications where high-hazard backflow protection is required. Licensed plumbers and backflow prevention specialists are the primary installers.

The 112-975XL is suited for installation on commercial irrigation systems, industrial process lines, boiler feed connections, and other high-hazard cross-connection points where local codes mandate RPZ-level protection. The NP designation indicates this assembly is supplied without unions, allowing installers to specify their own end connections. It is appropriate for above-grade mechanical room installations and outdoor vault installations where access for annual testing is maintained.

Key Features

• Reduced pressure zone design provides high-hazard backflow protection against both backpressure and back-siphonage
• 1.5-inch pipe size suits a wide range of commercial and industrial service lines
• No-unions (NP) configuration allows field selection of end connections
• Two independent check valves with differential pressure relief valve for redundant protection
• UPC listed (UPC: 612052040394) for code-compliance documentation

Compatibility

Designed as an OEM-style reduced pressure zone backflow preventer for 1.5-inch commercial and industrial plumbing systems requiring high-hazard cross-connection control.

Installation Notes

Installation must be performed by a licensed plumber or certified backflow prevention assembly tester in accordance with local plumbing codes and ASSE 1013 standards. Shut off the water supply and depressurize the line before installation. The assembly must be installed in an orientation consistent with the flow direction arrow and positioned to allow access for mandatory annual testing and repair. Do not install in a submerged or flooded vault without appropriate protective enclosures.

Technical Specifications

• Pipe Size: 1.5 inches
• Backflow Prevention Type: Reduced Pressure Zone (RPZ)
• End Connection Style: No unions (NP)
• Weight: 30 pounds
• UPC: 612052040394

Standard Information

• Brand: WILKINS
• Manufacturer Part Number: 112-975XL