American Backflow - 1" Check Valve - Repair Kit

The American Backflow 4V-500-02 Check Valve Repair Kit is designed for use with 1" Conbraco 40-500 Series Pressure Vacuum Breakers (PVBs), originally manufactured from 1991 through 2003. This OEM-equivalent kit replaces the internal check valve components, restoring critical backflow prevention functionality without the need for full valve replacement. Ideal for routine maintenance, code compliance, or backflow test failures, this kit is suitable for both potable water and irrigation systems utilizing legacy Conbraco PVBs.

Key Features:

• Check valve repair kit for 1" Conbraco 40-500 PVB
• Includes key internal components to restore sealing and pressure retention
• Designed for backflow testers, irrigation techs, and plumbing pros
• Ensures continued compliance with local and national codes

Construction & Durability:

• Built from corrosion-resistant and wear-resistant materials
• Precision-molded components ensure consistent operation
• Compatible with bronze-body Conbraco valves

Performance & Functionality:

• Restores proper check valve sealing in backflow prevention assembly
• Supports full pressure and flow capability of the 1" valve
• Reduces leakage and improves test performance

Ease of Installation & Use:

• Drop-in replacement—no modifications required
• Intended for use with Conbraco 40-500 Series PVBs
• Can be installed during annual inspection or system service

Technical Specifications:

• Part Number: 4V-500-02
• UPC: 670750818851
• Valve Compatibility: Conbraco 40-500 Series
• Valve Size: 1"
• Kit Type: Check Valve Repair

Installation & Application:

• For use in irrigation and potable water backflow assemblies
• Recommended for routine maintenance and repair of legacy systems
• Applicable in residential, commercial, and municipal settings