The Hayward SP0710XR50 Multiport Valve is a 6 position Side Mount Valve with 1.5 inch plumbing is designed for use with Hayward Pro Grid and Micro-Clear DE Filters. This Vari-Flo multiport control valve is engineered for maximum flow at lower pressure drops. Hayward valves feature an easy-to-use lever action handle that lets you dial up to six valve/filter functions: filter, backwash, waste, rinse, closed or recirculate. This valve comes complete with an integral sight glass allowing you to see when the backwashing cycle is completed.