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Conbraco 4V-500-03 repair kit components on white background, showing cap, float, O-rings, screws and small hardware for inspection.

Conbraco 4V-500-03 PVB Air Inlet Repair Kit 1/2-1"

Brand: Conbraco Industries
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$141.61
$106.21
SKU 4V-500-03
In Stock (17)

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Repair cap and float assembly for Conbraco 40-500 series pressure vacuum breakers. The 4V-500-03 kit restores the air inlet function on 1/2", 3/4" and 1" PVBs to maintain reliable backflow protection and venting operation.

  • Direct replacement air inlet (cap & float) for Conbraco 40-500 PVBs (1/2"-1").
  • Includes cap screw, cap, cap O-ring, cap spring, cap washer and cap nut for bonnet assembly.
  • Includes freeze plug, freeze spring and freeze ball plus float and float O-ring to restore float operation.
  • OEM-equivalent components engineered for potable water and irrigation systems.
  • Simple field installation — drop-in replacement with standard tools for quick service.
  • Helps restore compliant venting to prevent back-siphonage and protect the potable water supply.

This kit is intended for routine service and repairs on compatible Conbraco 40-500 bronze-bodied PVBs. If you are unsure about compatibility, confirm your valve model before ordering and consult a qualified plumber or certified backflow technician for installation and post-repair testing.

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