Two-position backwash valves have minimal flow restriction. Unique handle design allows easier operation; pin locks valve in filter position. Connects directly to side ports in D.E. or sand filters with 2" PVC unions. Six-position dial-type valves offer convenience, ease of use and efficient operation. Includes connecting pipe to match side ports in sand and D.E. filters. 2" PVC unions for filter-to-valve connection. Positive seal prevents leakage between ports.