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Transparent rubber repair kit for Watts 800 series vacuum breaker

Watts

Watts 800M4 1 In Rubber Kit

SKU CH-FFBB-NV1T8

Vacuum breaker repair kit for Watts Series 800 includes bonnet O-ring and check disc vent seal

  • ColorTransparent
  • Repair kit restores vacuum breaker function with included bonnet O-ring and check disc vent seal
  • Designed for Watts Series 800 M4 or 1 in models ensuring proper fit
  • Transparent rubber components allow visual inspection of seal condition
  • New condition guarantees unused parts free from wear or degradation
  • California Proposition 65 warning indicates chemical known to cause reproductive harm

Vacuum Breaker Repair Kit

This Watts 800M4 rubber kit restores vacuum breakers in the Series 800 line. It suits plumbers and facility managers maintaining back-flow prevention on potable-water systems. The transparent components let you verify seating during reassembly. Buyers needing parts for other series or larger pipe sizes should look elsewhere.

Thermals Noise Power

The kit contains only static rubber seals — bonnet O-ring, check disc and vent seal — so it generates no heat, noise or electrical draw. Installation requires hand tools and produces no ongoing operating cost. There are no moving parts to wear or fans to fail.

California Proposition 65 Notice

This product carries a California Proposition 65 warning for a chemical known to cause birth defects or reproductive harm. The notice applies to the kit as supplied and does not change the mechanical function of the seals. Installers should follow local safety practices when handling the parts.

Highlights

  • Repair kit restores vacuum breaker function with included bonnet O-ring and check disc vent seal
  • Designed for Watts Series 800 M4 or 1 in models ensuring proper fit
  • Transparent rubber components allow visual inspection of seal condition
  • New condition guarantees unused parts free from wear or degradation
  • California Proposition 65 warning indicates chemical known to cause reproductive harm

Specifications

ColorTransparent
BrandWATTS

Questions about this item

How is the Watts 800M4 1 In Rubber Kit installed, and which step is commonly missed?

Shut off the water supply, remove the vacuum breaker bonnet, and replace the bonnet O-ring, check disc and vent seal as a set. The step often missed is lubricating the new O-ring before seating it.

What maintenance or replacement will this rubber kit need later?

The rubber components degrade with age and chemical exposure; plan to install a fresh repair kit when the vacuum breaker drips or fails its annual test.

What limit appears first on the Watts 800M4 kit under sustained use?

Continuous hot-water cycling and chlorinated supply accelerate rubber hardening, so the seals lose elasticity before the brass body shows wear.

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