Watts 0888564 Check Valve Cartridge 1/2 to 3/4 Inches

Product Description

The WATTS 0888564 is a second check valve cartridge designed for use in backflow preventer assemblies. This internal replacement component maintains a reliable seal that prevents reverse flow through the assembly, protecting potable water supplies from contamination. Sized for 1/2 to 3/4 inch valve bodies, the cartridge installs directly into compatible CK 775 series assemblies. Plumbers and service technicians install this part during routine backflow preventer maintenance or when a failed check disc or seat is identified during an annual test.

This cartridge is intended for residential and light commercial plumbing applications where backflow prevention is required by code. It is suited for installation in line-pressure service on cold and hot water supply systems. The 1/2 to 3/4 inch size range covers the most common residential service line sizes, making it a practical replacement component for backflow preventer service work on domestic water systems.

Key Features

• Fits 1/2 to 3/4 inch CK 775 series backflow preventer bodies
• Serves as the second check cartridge in a dual-check assembly
• OEM-style replacement for restoring proper backflow protection
• Designed for in-line service without full assembly replacement

Compatibility

Designed as an OEM-style replacement second check cartridge for WATTS CK 775 series backflow preventer assemblies in 1/2 to 3/4 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 valve body. Follow local plumbing code requirements, including IPC guidelines, for backflow preventer testing and component replacement. After installation, the assembly should be tested by a certified backflow tester before returning the system to service.

Technical Specifications

• Size Range: 1/2 to 3/4 inches
• Series: CK 775
• Component Type: Second Check Valve Cartridge

Standard Information

• Brand: WATTS
• Manufacturer Part Number: 0888564