2 Replacement Intex Piston Valves Replacement on/off valve for pool filter pump for use with Intex above-ground pools using 1.5" diameter hoses with 2.5" threaded fittings Replace your old piston valves or upgrade to the Intex piston valve system to make changing hoses and pumps a breeze Assembly includes piston valve, hose O-ring, and step washer For use with filter pumps 28635EG, 28633EG, 28671EG, 28645EG, 28647EG, 28651EG, 28677EG, and 28681EG