The Magnum Force Pump has an exclusive ring-lok opening system allows a tool free access to strainer and pump internals. Its one way flap prevents debris in the pump strainer, skimmer basket and filter from flowing back into pool. The flap also prevents residual hot water in the heater from flowing into filter and causing damage to grids, valves, gaskets, etc. It has an exclusive air purge system within the strainer expels air outside the pump for superior priming capabilities.