Reich 19L Twin Submersible Water Pump With Non Return ValveReich 19L Twin Submersible Water Pump With Non Return Valve The Reich Twin submersible Water pump has an output of 19 litres per minute and comes complete with an air vent and non return valve. The TWIN submersible pump's special feature is that it has two pump motors ensuring exceptionally great flow rate and pressure output. In the event of one of the pump motors failing, the TWIN pump will continue to work with reduced power. Features and Benefits