Rain Bird - Drainage Pop Up Relief Valve with 4 Inch PVC Elbow and Hub Fitting Adapter Epansion Combination reliable DVF valve and

Combination reliable DVF valve and atmospheric backflow preventer in one unit

User Installed Options

and 12 nozzles

and all JTV valves

Cube Relay

Rain Bird - Drainage Pop Up Relief Valve with 4 Inch PVC Elbow and Hub Fitting Adapter Epansion Combination reliable DVF valve andA pop up water relief valve (also commonly known as a pop up drainage emitter) that is normally closed except when there is a build up of hydrostatic pressure. As the drainage pipes fill and build up slight pressure, the cover rises to allow the excess water to escape. Once the water is discharged the pressure drops and a stainless steel spring automatically retracts the cover to its closed flush position. The flush design of the product ensures that