SPX Flow Aqua Jet FM Variable Flow Pressure Pump – 12V, 1 Year Warranty The whisper quiet Flow Master 50 incorporates state-of-the-art electronics to automatically control pump speed The digital controller adjusts water flow as the demand is increased and decreased while maintaining a very smooth flow The unique variable flow feature of the Flow Master pump allows the pump to be mounted without an accumulator tank and still maintain an even flow regardless if one or multiple taps are being used Specifications: Motor WPS 50 150 W, 12/24V DC (with built-in thermal protection) Body Nylon/Polypropylene Valves Santoprene/EPDM Diaphragm Santoprene Connection 3/8 BSP / hose 1/2, 1/2 BSP / hose 3/4