1. On/Off Plunger Valve with Strainer: The plunger valve is suitable for the on/off piston valve components of the filtration pump in above ground swimming pools, used for connecting the inlet and outlet of above ground swimming pools, and is an important accessory for improving the filtration system of swimming pools. 2. Pool Plunger Valve: Above ground pools using 1 1/2 inch diameter hoses with 2 1/2 inch threaded connector fittings. 3. Compatibility: Replace your old plunger valve(s). Compatible with the Intex, Coleman Compatible Plunger Valve system. Works with the Intex 1500, 2500 and 4000 gallon per hour filtration pumps as well as the Intex Saltwater Chlorinator and Intex 2000 gallon per hour Chlorinator Pump Combo. 4. : Upgraded Easy Turn Replacement Pool Filter Pump Plunger On/Off Valve. The valve can be easily installed to replace old or damaged plunger valves, Compatible 38 Hose Connection Pool Pump.