Openwell Monoset Pumps


  • Energy Efficient Motor.
  • Low operating cost.
  • Water lubricated motor with easily re-woundable stator.
  • Radial and mixed flow models.
  • Rubber diaphragm provided at the bottom of the motor to compensate thermal expansion of water


  • Water extraction from bores of diameter 8" (200mm) and above.
  • Irrigation systems for Agriculture including Drip and Sprinkler systems.
  • Pressure boosting applications.
  • Public water supply to large residential areas and multi storied apartments.
  • Water supply to commercial establishments like Hotels, Lodges and Hospitals.
  • Dewatering of mines.
  • Industrial water supply & Fire Fighting.

Material of Construction

Stator Shell Stainless steel
Thrust Bearing Teflon/Carbon with SS segments
Bearings Bush Leaded Tin Bronze/ Carbon
Diaphragm Nitrile Rubber
Shaft Stainless steel
Strainers Stainless steel
Pump shaft Stainless steel
Discharge casing Cast Iron 
Inlet bracket Cast Iron
Bowl/Diffuser assebly  Cast Iron / Bronze
Bearing Bush Leaded Tin Bronze
Impeller Cast stainless steel

Product Data

Bore size min. 8”(200mm)and above
Power Range 10.0 to 85.0 HP
Voltage Range 340V- 440V, AC Three phase , 50Hz
Speed 2880RPM
Motor Type Water filled Water Cooled motor
Coupling Key / NEMA
Head Maximum 320 M
Discharge Maximum 2600 LPM
Liquid temperature Maximum 35ºC
Sand content in water Maximum 50 PPM