... Water Pump 1)water cooled single-stage pump 2)farm irrigation,fire fighting 3)head:5M-50m 4)diesel engine pump,pump water: Water ... exhaust pump, to start up in emergency.Fully water cooled structureController applied special chip with fixed programsSpeed regulation system ... ’ requirements. Accessories (Option)External fuel tank, engine jacket water heater (below 4 °C), vacuum priming system, constant ...