Air release allows air to escape the system at startup and vacuum relief
allows air to enter the system during shutdown. Air vacuum release valves are installed at the high point of the drip field to keep soil from being sucked into the drip emitter due to back siphoning or back pressure. This 1" air release valve is an absolute necessity with underground drip systems. Air release valves for water systems are also used for proper drainage of the supply and return manifolds. Use one plastic air release valve on the high point of the supply manifold and one on the high end of the return manifold and any high points in the system. A pre-installed schrader valve allows pressure
testing off the air/vacuum breaker.
Geoflow Air Release Vent Specifications
The air vacuum breakers provide instant and continuous vacuum relief and
non-continuous air release It shall be rated to 80 psi. Both the body and
the removable dirt cover shall be constructed of molded plastic. The body
and the dirt cover shall be connected with a ¾ inch hose thread. The
ball shall be constructed of low density plastic and the internal seat
shall be constructed of vinyl. Inlet size shall be 1 inch male pipe thread.
Geoflow Air Release Vent Technical Details
Cancer and Reproductive Harm - www.P65Warnings.ca.gov