The Jandy Backwash Valve features a straight-through, full-flow port design that optimizes flow and hydraulic efficiency. A versatile valve, it connects to the Jandy DEV and JS Sand Filters as well as most other filter brands. Versa-Coupler allows easy installation to fit any filter from 7″ up to 9″ inlet/outlet port distance. With its Never Lube technology, the valve requires no service and comes with a lifetime guarantee on the diverter seal.