... Made of fiberglass 2.OEM 3.Wholesaler (Top-mount valve ) Sand Filter Systems,Swimming Pool Sand Filter,Pool Filter ... Easy-to-use water drain plug and multi-port valve lets you select any of the valves/ filter ... 0.40 sq meter(filter area), 1.5’’/50mm(valve connections) 19.5 cbm/h(flow rate) 210kg(sand ... B), 0.41 sq meter(filter area), 2’’/63mm(valve connections) 20.2cbm/h(flow rate) 215kg(sand)Φ-800, ...