... Submersible motor 3.Mechanical seal 4.MOQ=1 5 inch submersible open well water pump New products,4,5,6 inch cast iron sumersible deep well ... . 380V voltage deviation is no more than ±5%,frequency is 50HZ, three -phase power deviation is no more than ±1%.2. ... removal, small area. 4. Simple using and maintenance. 5. Safe and reliable operation, no pollution to water, etc. 5 inch submersible open well ...