- On/off plunger valve with strainer designed for the on/off piston valve components of above-ground pool filtration pumps. It connects the inlet and outlet and helps improve the pool filtration system. - Pool plunger valve size and fit: for above-ground pools using 1-1/2 inch diameter hoses with 2-1/2 inch threaded connector fittings. - Compatibility: replace your old plunger valve(s) or use with Intex, Coleman compatible plunger valve systems. Works with Intex 1500, 2500 and 4000 gallon per hour filtration pumps, as well as Intex Saltwater Chlorinator and Intex 2000 gallon per hour Chlorinator Pump Combo. - Easy installation: upgraded Easy-Turn Replacement Pool Filter Pump Plunger On/Off Valve. The valve can be easily installed to replace old or damaged plunger valves and is compatible with 38 Hose Connection Pool Pump. - Use scenario 1: Replace a worn or leaking valve on an Intex 1500 GPH filtration setup to restore reliable flow control and accurate filtration. - Use scenario 2: Upgrade a Coleman or Intex compatible pump system to a reliable on/off valve that works with standard 1-1/2 inch hoses and 2-1/2 inch threaded fittings, including saltwater chlorinator configurations. - Use scenario 3: Maintain an above-ground pool with 1-1/2 inch hose connections by swapping in a plunger valve to simplify maintenance and keep the filtration circuit operating smoothly.