Watts 887541 Check Valve Disc 2 Inch 009M2 LF009M2

Product Description

The WATTS 887541 is a replacement second check valve disc designed for use in backflow preventer assemblies. This internal repair component restores the sealing function of the second check module, maintaining the pressure differential and flow control performance that the host assembly depends on. It fits the 2 inch 009M2, LF009M2, and 4000B valve bodies, as well as the 1-1/4 inch through 2 inch 009M1 series. Licensed plumbers and backflow prevention specialists install this disc during scheduled testing, maintenance, or repair of reduced-pressure and double-check backflow preventer assemblies.

This disc is suited for commercial and residential plumbing systems where backflow prevention assemblies are required by local code. Typical applications include potable water service lines, irrigation supply connections, and mechanical room installations. The 887541 is used when the second check valve fails to hold during annual backflow testing or shows visible wear, scoring, or deformation during disassembly. It is intended as a direct OEM-style internal repair part, not a full assembly replacement.

Key Features

• Replaces the second check disc in 009M2, LF009M2, 4000B, and 009M1 valve bodies
• Compatible with 2 inch valve sizes across multiple WATTS 009 and 4000 series assemblies
• Also fits 009M1 assemblies in 1-1/4 inch through 2 inch sizes
• Restores check valve seating and sealing performance during repair service
• Lightweight repair component at 0.59 pounds for easy handling in the field

Compatibility

Fits the 2 inch 009M2, LF009M2, and 4000B backflow preventer assemblies, and the 009M1 in 1-1/4 inch through 2 inch sizes.

Installation Notes

Installation should be performed by a licensed plumber or certified backflow prevention tester in accordance with local plumbing codes and the International Plumbing Code (IPC). Shut off the upstream and downstream isolation valves and relieve system pressure before disassembling the check module. Inspect the disc seat inside the valve body for scoring or debris before installing the new disc, and ensure the disc is seated squarely before reassembling the cover. Do not overtighten cover bolts beyond the assembly instructions provided with the host valve.

Technical Specifications

• Weight: 0.59 pounds
• Compatible Valve Sizes: 1-1/4 inches through 2 inches

Standard Information

• Brand: WATTS
• Manufacturer Part Number: 887541