1. Hayward Hayward SPX0710Z3 Cover O-ring Replacement for Hayward Multiport Valves This cover oring is not interchangeable with current production models Fits hayward multiport valve models sp0710 sp0711 Weighs 21pound Cover oring replacement   2. Hayward Hayward SPX0715D Valve Seat Gasket Replacement for Hayward Multiport Valves and Sand Filters Also fits hayward hcf series