Wilkins 373-48b Outlet Ball Valve 1 Inch 375

Product Description

The WILKINS 373-48b is an outlet ball valve designed as a replacement component for the WILKINS 375 series backflow preventer. Ball valves in this position control downstream shutoff at the outlet port of the backflow assembly, allowing the technician to isolate the downstream side during testing, maintenance, or repair without taking the entire system offline. This part is the updated replacement for the former part number 373-48B. Licensed plumbers and backflow prevention assembly testers are the primary installers and service technicians for this component.

This outlet ball valve fits the 1-inch 375 model backflow preventer. The 375 series is a reduced-pressure zone assembly commonly installed in commercial and residential potable water systems where backflow prevention is required by local plumbing code. Typical installation locations include irrigation systems, fire suppression supply lines, and general building water service connections where cross-connection control is mandated.

Key Features

• Outlet-side ball valve for shutoff and isolation during backflow assembly service
• Sized for 1-inch 375 series backflow preventer assemblies
• Direct OEM-style replacement component for simplified serviceability
• Updated part superseding former part number 373-48B

Compatibility

Designed for use with the WILKINS 375 backflow preventer in the 1-inch configuration. This part was formerly identified as part number 373-48B.

Installation Notes

Installation and replacement of backflow preventer components should be performed by a licensed plumber or certified backflow prevention assembly tester in accordance with local plumbing codes and IPC guidelines. Shut off the upstream supply and relieve system pressure before disassembling any portion of the backflow assembly. Inspect all mating surfaces and seats for wear or debris before installing the new valve. Verify proper orientation of the outlet valve relative to flow direction before returning the assembly to service.