Product Description: Flow-Rite MA024QLR Pump-Out Aerator, Quik-Lok A pump-out feature provides a convenient means of filling a tournament livewell weigh-in bag and also enables a livewell to be pumped out while the boat is still in the water or when moored at a dock overnight. It eliminates the need for additional diverting valves, cables, actuators, electrical connections and most of the plumbing required by other systems. Simply install the Pump-Out Aerator in place of the standard spray head used with any recirculation pump or with any of our V3 or V4 control valves that include a "RECIRC" mode. It has two hose connections, one intake from the pump and one outlet for the discharge hose that will connect to the new discharge thruhull fitting. The 2 position head is pushed in to bring water into the livewell where it is recirculated and aerated by the air intake and venturi built into the head. The head can also be rotated left or right to promote a desirable circular current within the livewell.