4"three phase submersible electric pumps

*Conform to international standard of IEC34-ICE, whole blocked asynchronous motor with squirrel cage rotor.
* Outer shell, shaft and bottom made of stainless steel.
* Copper alloy or chromium plated cast-iron upper adaptor.
* Pressure automatic adjusting device made of oil and water proof reinforced butyl-rubber.
* Flange connector under the standard of NEMA (USA National Electrical Manufacturing Association). * Lacquer-coated wire conformed to USA standard of NEMA MW37-C.
* Assure double safety by using the unique released high pressure device.