Zurn rk114-375r Rubber Parts Kit 1-1/4 to 2 Inch 375

Product Description

The ZURN rk114-375r is a rubber parts kit designed for the Wilkins 375 series reduced pressure zone (RPZ) backflow preventer assemblies. This kit supplies the internal rubber components needed to restore proper sealing and valve function during scheduled maintenance or after field inspection reveals worn or damaged seats, discs, or O-rings. Licensed plumbers and backflow prevention specialists install this kit as part of a standard rebuild or annual test-and-repair service on in-line backflow assemblies sized 1-1/4 inches through 2 inches.

This kit applies to 375 series backflow preventers in the 1-1/4 inch through 2 inch size range, covering both residential and light commercial water service applications. The 375 series is commonly found protecting potable water supplies in irrigation systems, boiler make-up lines, and industrial process connections where reduced pressure protection is required by local code. Use this kit when replacing rubber internals during a required annual backflow test or corrective repair.

Key Features

• Covers the 1-1/4 inch through 2 inch size range of the 375 series RPZ assembly
• Replaces rubber seating and sealing components for a complete internal rebuild
• Supports compliance with annual backflow preventer inspection and repair requirements
• OEM-style fit eliminates field modification of replacement parts

Compatibility

Designed for use with Wilkins 375 series reduced pressure zone backflow preventer assemblies in 1-1/4 inch through 2 inch sizes.

Installation Notes

Installation should be performed by a licensed plumber or certified backflow prevention assembly tester in accordance with local plumbing code requirements. Shut off upstream supply and relieve system pressure before disassembling the backflow preventer. Inspect all internal passages and hard components for wear or corrosion before installing new rubber parts. After reassembly, perform a full backflow test per local authority having jurisdiction (AHJ) requirements before returning the assembly to service.

Technical Specifications

• Size Range: 1-1/4 inches to 2 inches
• Compatible Series: 375
• Kit Contents: Rubber internal parts

Standard Information

• Brand: ZURN
• Manufacturer Part Number: rk114-375r