RV Vacuum Breaker Check Valve

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RV Vacuum Breaker Check Valve

Vacuum breakers are an important part of any plumbing system connected to a toilet. This breaker protects the water supply from contamination from backflow and back siphonage. Basically put, you need one of these if you want the pipes around your toilet area to keep from being contaminated. This vacuum breaker is one that has a check valve and air vent as part of its design.

Although this piece is small and simple-looking there are several points that need to be addressed when it comes to proper water safety and installation. First, this should only be used on one fixture at a time. This keeps the pressure in the line predictable and the vacuum breaker able to handle it

. Second, this vacuum breaker is a high-hazard protectant, which means that it protects the potable water supply from toxic materials. Because of this, it can be used in a low-hazard application as well. Third, it should be installed a minimum of 6 inches above the highest point of any item connected to the waste tank where the flusher is installed.

This vacuum breaker should also not be under more than 12 hours of continuous water pressure. This could cause the check valve to shut or become stuck. Fourth, make sure that this vacuum breaker is installed upright. It relies on gravity to properly function and if it is installed in a different position, the valve may not fully open.

This important part of your plumbing system is one that is more complicated than it looks. If you are unsure about how to install it, it is recommended to ask a certified mechanic or plumber. If you have any questions about the product itself, feel free to contact us online or call our friendly Customer Care team today!


  • Dimensions: 6.5" x 3.5" x 2.7"
  • Weight: .8 ounces
  • Material: Plastic
  • Fits with 1/2" PEX tubing
  • Installed between water inlet connection and tank flusher
  • Prevents harmful bacteria and waste from getting into the hose or water system
  • Meets IAPMO standards
  • Requires installation of at least 6" above the highest point of any item connected to the waste tank where the flusher is installed