Watts 888112 Backflow Preventer Check Valve 1 Inch

Product Description

The WATTS 888112 is a first check valve assembly designed for use in 919 series reduced-pressure zone backflow preventer assemblies. This component serves as the initial line of defense against backflow contamination in potable water systems. At 1 inch in size, it fits inline within the 919 RPZ body and maintains a tight seal to prevent reverse flow under both back-pressure and back-siphonage conditions. Licensed plumbers and water system technicians handle installation and replacement during routine backflow preventer servicing or annual inspection cycles.

This check valve is suited for residential and light commercial potable water supply applications where cross-connection control is required by local plumbing code. It is typically installed in irrigation systems, boiler feed lines, and fire suppression supply lines protected by the WATTS 919 series backflow preventer. Replacement is commonly performed during scheduled maintenance or after a failed annual test indicates the first check is not holding to code-required closure differential.

Key Features

• First check valve replacement component for 919 series RPZ assemblies
• 1 inch nominal size for direct fitment in standard 919 body
• Designed to maintain closure under back-pressure and back-siphonage conditions
• Lightweight at 0.4 pounds for easy field handling and installation
• OEM-style replacement supports code-compliant backflow preventer maintenance

Compatibility

Designed as an OEM-style replacement first check valve for 1 inch WATTS 919 series reduced-pressure zone backflow preventer assemblies.

Installation Notes

Installation and replacement should be performed by a licensed plumber or certified backflow preventer tester in accordance with local plumbing codes and cross-connection control regulations. Shut off the water supply and relieve system pressure before disassembling the backflow preventer body. Inspect all seating surfaces and O-rings during replacement to ensure proper closure differential is restored. After reassembly, a certified tester must perform a functional test to verify the assembly meets local jurisdiction requirements before returning the system to service.

Technical Specifications

• Nominal Size: 1 inch
• Weight: 0.4 pounds
• Series: 919
• Component Type: First Check Valve Assembly
• UPC: 98268072686

Standard Information

• Brand: WATTS
• Manufacturer Part Number: 888112