Watts 888822 Second Check Valve Assembly Repair Kit

Product Description

The WATTS 888822 is a second check valve assembly used as a replacement repair component in Watts backflow preventer assemblies. This part restores the internal check valve function that prevents contaminated water from flowing back into the potable supply line. It is designed for use in commercial and industrial plumbing systems where backflow protection is required by code. Plumbers and pipe fitters performing field repairs or annual test-and-repair service on existing backflow preventer installations are the primary installers of this component. The assembly weighs 3 pounds.

This second check valve assembly is compatible with Watts backflow preventer models in two size ranges. For 2.5 inch through 4 inch assemblies, it fits the 774, 774DCDA, 2000SS, and 3000SS series. For 6 inch assemblies, it fits the 774X, 774XDCDA, 2000SE, and 3000SE series. This makes it a versatile service part covering a broad range of Watts reduced-pressure and double-check backflow preventer platforms commonly installed in commercial water service lines.

Key Features

• Direct OEM-style replacement second check valve assembly for Watts backflow preventers
• Compatible with multiple Watts series across two size ranges: 2.5 to 4 inch and 6 inch assemblies
• Restores proper internal check valve operation to maintain backflow protection integrity
• Supports compliance with local plumbing codes requiring functional backflow prevention
• Compact repair component at 3 pounds, suited for field service

Compatibility

Compatible with Watts 774, 774DCDA, 2000SS, and 3000SS backflow preventer assemblies in 2.5 inch through 4 inch sizes, and with Watts 774X, 774XDCDA, 2000SE, and 3000SE assemblies in 6 inch sizes.

Installation Notes

Installation should be performed by a licensed plumber familiar with backflow preventer service procedures. Shut off the water supply and relieve system pressure before disassembling the backflow preventer body. Follow the manufacturer service manual and applicable local plumbing code requirements, including IPC guidelines, when replacing internal check valve components. Do not reinstall without verifying proper seating and performing a post-repair backflow test as required by the authority having jurisdiction.

Technical Specifications

• Weight: 3 pounds
• Compatible Size Range: 2.5 to 4 inches (774 series); 6 inches (774X series)

Standard Information

• Brand: WATTS
• Manufacturer Part Number: 888822