What Is An Atmospheric Vacuum Breaker

This prevents contamination should the public drinking water system s pressure drop.

What is an atmospheric vacuum breaker.

These assemblies are available in 1 2 inch through 3 inch pipe size and must be installed vertically for. Enjoy the videos and music you love upload original content and share it all with friends family and the world on youtube. 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. Vacuum breakers vacuum breakers.

A vacuum breaker also known as atmospheric vacuum breaker is a backflow prevention device that is used to prevent the flow of non potable liquids back into drinking water systems. Designed for use in health hazard cross connections and continuous pressure applications where the water enters the equipment at or below its flood rim. 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. 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.

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. 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. 800m4 pressure vacuum breaker prevents the 3 4 in. Backflow is a fantastic mechanism that regulates the flow of liquid.

Provides protection against backsiphonage incidents only. Understanding how they protect our water. Atmospheric vacuum breakers must be installed at least 6 inches above the spigot with piping from the vacuum breaker to discharge the water. Applications include irrigation systems firelines and industrial process water systems.

Diagram of atmospheric vacuum breaker in both working states. Avb s may be purchased at your local hardware store. 800m4 pressure vacuum breaker prevents the reverse flow of polluted water from entering into the potable water supply due to back siphon age. The water flows through the breaker and into the spray hose.