Watts 887301 Second Check Module 1.25-1.5 Inch

Product Description

The WATTS 887301 is a replacement second check module designed for use in reduced-pressure and double-check backflow prevention assemblies. This internal service component replaces the downstream check element within the valve body, restoring the assembly to proper working order without requiring full unit replacement. The module fits 1.25-inch and 1.5-inch assemblies and is intended for installation by licensed plumbers or backflow prevention specialists performing field repairs or annual test-and-repair service.

This module is used in commercial and residential plumbing systems where backflow prevention assemblies are required by code. It is a direct service replacement part suited for repair work on 009M2, LF009M2, and 4000B series backflow preventers in the 1.25-inch to 1.5-inch size range. It is commonly used during annual backflow assembly inspections when the second check is found to be fouled, worn, or failing to hold seat.

Key Features

• Direct replacement second check module for field repair of backflow assemblies
• Compatible with 009M2, LF009M2, and 4000B series assemblies in 1.25-inch and 1.5-inch sizes
• Allows in-field servicing without full assembly replacement
• Lightweight at 0.5 pounds for easy handling during service calls

Compatibility

Designed as a replacement second check module for WATTS 009M2, LF009M2, and 4000B backflow prevention assemblies in 1.25-inch and 1.5-inch sizes.

Installation Notes

Installation should be performed by a licensed plumber or certified backflow prevention tester in accordance with local plumbing codes and IPC requirements. Shut off the water supply and relieve system pressure before opening the assembly for service. Inspect the valve body seat for debris or damage before installing the new module. Do not overtighten module retaining components, as this may damage sealing surfaces.

Technical Specifications

• Compatible Assembly Sizes: 1.25 inches to 1.5 inches
• Weight: 0.5 pounds

Standard Information

• Brand: WATTS
• Manufacturer Part Number: 887301