Rain Bird - Drainage Pop Up Relief Valve with 4 Inch PVC Elbow and Hub Fitting Adapter 5004PL This grate is manufactured from

This grate is manufactured from a structurally foamed High Density Polyethylene (HDPE) with a UV inhibitor to reduce sun damage

Inlet Thread: Female Threaded NPT

eliminating the need for measuring

-- Faster maintenance with a new self-cleaning arc adjustment screw

FCC approved spread spectrum 2 way radio transceivers with FCC Class B approvals

Rain Bird - Drainage Pop Up Relief Valve with 4 Inch PVC Elbow and Hub Fitting Adapter 5004PL This grate is manufactured fromA 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