4.2 GPM Viking Power 16 Waste Pump | Johnson Pump 10-13350-03 12 volt single-chamber diaphragm pump can be used waste water, shower drain, or bilge pumping needs. Johnson Pump Viking Power 16 pump 4.2 GPM at open flow Self-priming to 9.8 ft. vertical lift 2.3 amps @ 12 volts DC with built-in thermal protection Single chamber diaphragm design provides smooth and quiet operation Premium reinforced nitrile rubber diaphragm can be serviced without removing the pump from the system Specifically designed to pump grey waste water Non-choke valves eliminates the need for in-line filters Not a macerating pump – designed for pumping already macerated waste Can be installed anywhere after the drain outlet of waste water system Dual check valves installed inline for improved pumping action Pump can be run dry and handle a mixture of air and water without damage to pump KlickTite XL connectors for 1 in. hose, 3/4 in. hose or 1/2 in. BSP 7.3 in. long x 7.1 in. wide x 8 in. height CE certified