... .MOQ=1 4 inch submersible water pump New products,4,5,6 inch cast iron sumersible deep well pump, cast iron ... ; 5. Temperature range: -15~80°C. Product overview QJ submersible pumps are widely used in1. agriculture irrigation, sprinkler irrigation, well water ... the requirements of pump continuous working. Characteristics 1. Motors and pumps assembled into one. 2. Simple structure. 3. Easy installation ...