this application describes a device to convert an existing pool skimmer assembly into a pressurizable pool skimmer assembly which allows the existing pool skimmer assembly to act with this existing pool pump in emergency situations , such as assisting firefighters with pool water for extinguishing local wildfires or house fires . this method utilizes a removable plug cap and o - rings to allow the pool pump to draw the pool water from the poolmaid drain using the existing pool skimmer . this device can also be used to drain the pool for cleaning the pool or for winterizing the pool , with out the need for an electrical sump pump .