Made from ABS, the top mount multiport valve has 1.5 inch (38 mm) fitting connectors, and will work smoothly with your pool sand filter. Our pool filter valve features an easy-to-use lever action handle, which allows you to choose among 6 valve/filter functions: winter, recirculate, rinse, filter, waste and backwash. Equipped with an integral sight glass, you can see when the backwashing cycle is completed. Combined with pool filter, this multiport valve will keep the water in your swimming pool clean and sparkling. Please note the O-ring and fitting are not included in the delivery.