E+D+J Fire pump system, with electric pump, diesel engine pump, jockey pump and control panel. Fire pump system E+ ... steel, mechanical seal is carbon/ceramic.2. Diesel engine pump, with capacity equal to electric pump capacity, fuel tank.3. Jockey pump ... for the automatic operation, battery charger, 12 volt battery to start the engine. ( function(){ var aBigImageSrc = [ 'http://i01.i.aliimg.com/photo ...