Watts 887703 Pressure Vacuum Breaker Check Kit

Product Description

The WATTS 887703 is a replacement check kit designed for use with the 800M4 series pressure vacuum breaker (PVB) assemblies. This kit provides the internal check components needed to restore proper backflow prevention function in a PVB valve. Pressure vacuum breakers are critical backflow prevention devices installed on irrigation systems and other non-potable water service lines to protect the potable water supply from contamination. The kit is appropriate for 1/2 to 3/4 inch valve sizes, making it suitable for common residential and light commercial irrigation and plumbing applications. Licensed plumbers and irrigation technicians perform this type of service work.

This check kit is used during field service and maintenance of 800M4 series PVB assemblies. Pressure vacuum breakers are typically installed in above-grade locations on outdoor irrigation and hose connection supply lines. When the internal check seats wear or fail to seal, backflow can occur, making timely replacement of the check components essential to maintaining code-compliant backflow protection. This kit covers both 1/2 inch and 3/4 inch valve configurations in the 800M4 series.

Key Features

• Replacement check components for 800M4 series pressure vacuum breakers
• Covers 1/2 inch and 3/4 inch valve sizes
• Restores proper check function and backflow prevention performance
• Designed for field service and maintenance applications
• Lightweight at 0.2 pounds for easy handling on service calls

Compatibility

Designed for use with WATTS 800M4 series pressure vacuum breaker assemblies in 1/2 inch and 3/4 inch sizes.

Installation Notes

Installation should be performed by a licensed plumber or qualified irrigation technician familiar with backflow prevention device servicing. Shut off the upstream water supply and depressurize the valve before disassembly. Local codes may require inspection or testing of the reassembled backflow preventer by a certified backflow tester after service. Refer to the valve manufacturer service instructions for disassembly and reassembly procedures specific to the 800M4 series.

Technical Specifications

• Valve Size Range: 1/2 to 3/4 inches
• Compatible Series: 800M4
• Weight: 0.2 pounds

Standard Information

• Brand: WATTS
• Manufacturer Part Number: 887703