What Is An Atmospheric Vacuum Breaker

Diagram of atmospheric vacuum breaker in both working states.

What is an atmospheric vacuum breaker. Designed for use in health hazard cross connections and continuous pressure applications where the water enters the equipment at or below its flood rim. Vacuum breakers vacuum breakers. This prevents contamination should the public drinking water system s pressure drop. 800m4 pressure vacuum breaker prevents the reverse flow of polluted water from entering into the potable water supply due to back siphon age.

A vacuum breaker is an attachment commonly placed on a bibcock valve or toilet or urinal flush valve that prevents water from being siphoned backward into the public drinking water system. Avb s may be purchased at your local hardware store. The water flows through the breaker and into the spray hose. A vacuum breaker typically contains a plastic disc that is pressed forward by water supply pressure and covers small.

This type of vacuum breaker is often installed on commercial dish sink hose sprayers and on water supply lines for commercial dishwashers. The most basic form of protection is the presence of an air gap in between the possible source of contamination and access to the plumbing system the atmospheric vacuum breaker consists of a check valve member and an air vent that is normally closed when the device is pressurized a hose connection vacuum breaker should be. An atmospheric vacuum breaker avb is a backflow prevention device used in plumbing to prevent backflow of non potable liquids into the drinking water system. Applications include irrigation systems firelines and industrial process water systems.

These assemblies are available in 1 2 inch through 3 inch pipe size and must be installed vertically for. Atmospheric vacuum breakers must be installed at least 6 inches above the spigot with piping from the vacuum breaker to discharge the water. Atmospheric vacuum breaker atmospheric vacuum breakers avb s are among the simplest and least expensive mechanical types of backflow prevention assemblies that the end user can buy. Enjoy the videos and music you love upload original content and share it all with friends family and the world on youtube.

These vacuum breakers are mainly used in water pipelines and tanks. Backflow is a fantastic mechanism that regulates the flow of liquid. Understanding how they protect our water. It consists of bronze body construction silicone rubber check valve disc plastic check valve seat stainless steel springs a bonnet with silicone rubber o ring seal a lightweight plastic.