Openwell Monoset Pumps


  • Energy efficient motor.
  • Low operating cost.
  • Water lubricated motor with easily re-woundable stator.
  • Radial and mixed flow models(with special High-Head design).
  • Pump sets with special materials are available on request.
  • Rubber diaphragm provided at the bottom of the motor to compensate thermal expansion of water.


  • Water extraction from bores of diameter 6" (150mm) and above.
  • Irrigation systems for Agriculture including Drip and Sprinkler systems.
  • Pressure boosting applications.
  • Domestic water supply to large residences and multi storied apartments.
  • Water supply to commercial establishments like Hotels, Lodges and Hospitals.
  • Dewatering of mines.
  • Industrial water supply.

Material of Construction

Stator Shell Stainless steel
Thrust Bearing Teflon/Carbon with stainless steel segments
Bearing Brush Leaded Tin Bronze/ Carbon
Diaphragm Nitrile Rubber
Shaft Stainless steel
Strainers Stainless steel
Pump shaft Stainless steel
Discharge casing Cast Iron / Stainless steel
Shaft sleeve Stainless steel
Bowl/Diffuser assembly Cast Iron / Stainless steel
Bearing Bush Leaded Tin Bronze/Carbon/Nitnie Rubber
Impeller Stainless steel / Engineering plastic

Product Data

Bore size min. 6”(150mm) and above
Power Range 3.0 to 30.0 HP
Voltage Range 340V- 440V, AC Three phase , 50Hz
Speed 2880RPM
Motor Type Water filled and water cooled Induction motor
Coupling Key / NEMA
Head Maximum 398 M
Discharge Maximum 1600 LPM
Liquid temperature Maximum 35ºC
Sand content in water 50 PPM