Watts 887225 Rubber Check Valve Kit 10 Inch 909 LF909

Product Description

The WATTS 887225 is a rubber repair kit designed for the first check valve assembly in WATTS 909, LF909, and the first and second check positions in WATTS 709 backflow preventers at the 10-inch size. The kit supplies the elastomeric seating components needed to restore proper check valve function and maintain the pressure differential required for backflow protection. Licensed plumbers and fire protection contractors use this kit during scheduled maintenance or when inspection reveals worn or damaged rubber check components. At 0.95 pounds, it is a compact service part suited for field repair without full valve replacement.

This kit is intended for 10-inch WATTS 909, LF909, and 709 series reduced pressure zone and double check backflow prevention assemblies. These assemblies are commonly installed in commercial, industrial, and municipal water supply systems where cross-connection control is required. The kit addresses first check rubber components for the 909 and LF909 models and covers both first and second check positions for the 709 model, making it a versatile service item for technicians maintaining multiple valve types in the same installation.

Key Features

• Rubber check valve seating components for 10-inch WATTS 909, LF909, and 709 series backflow preventers
• Covers first check position on 909 and LF909 models
• Covers both first and second check positions on 709 models
• Lightweight at 0.95 pounds for easy field handling
• OEM-style replacement rubber for proper seal integrity and inspection compliance

Compatibility

Compatible with WATTS 909 and LF909 first check assemblies and WATTS 709 first and second check assemblies, all in the 10-inch valve size.

Installation Notes

Installation should be performed by a licensed plumber or certified backflow prevention assembly tester in accordance with local plumbing codes and ASSE standards. Shut off the upstream isolation valve and relieve system pressure before disassembling the check valve module. Inspect the check seat and disc holder for scoring or corrosion before installing new rubber components. After reassembly, perform a field test per local authority requirements before returning the assembly to service.

Technical Specifications

• Valve Size: 10 inches
• Compatible Series: 909, LF909 (1st check), 709 (1st and 2nd check)
• Weight: 0.95 pounds

Standard Information

• Brand: WATTS
• Manufacturer Part Number: 887225