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Horizontal Openwell Submersible Pumps - CSS & CSM Series

These centrifugal pumps are ideally suitable for openwells or tanks where there is a wide fluctuation in water level. This works under water and it rests at bottom of the well. Hence suction and priming problem do not arise. Pump’s volute chamber is designed to give the best possible hydraulic efficiency. Dynamically balanced impeller offers vibration free operation with long life.
Prime mover is rewindable, water-cooled motor. Specially designed water lubricated bearings are used to withstand axial thrust loads with minimum wear and tear. The stator is wound with special water proof synthetic film insulated copper winding wires and made up of low watt loss steel laminations assembled under pressure and rigidly locked in stainless steel stator shell.

Features Specifications MOC
  • SS and carbon thrust bearings used in vertical openwell sub
  • Bronze impeller in specific models
  • Specially designed journal bushes for better cooling effect
  • Designed for extensive voltage fluctuations
  • High operating efficiency
  • Detachable pump and motor in vertical higher stage pump
Power Range  0.37 kW – 1.5 kW (0.5HP-20 HP)
Speed 2880 RPM
Version Single phase 200-240V, Three phase, 380 -415V, 50Hz, A.C Supply
Maximum total head Upto 80 m
Maximum flow rate Upto 195 m3 / h (54 lps)
Degree of Protection IP 58
Direction of Rotation Clockwise viewed from driving end
Nominal delivery size in mm 25, 50, 65, 80 & 100
Type of Duty S1 (continuous)
Method of starting Capacitor Start  Capacitor Run (CSCR) / Permenant Split Capacitor (CSR) Direct on Line upto 5.5 kW, SD upto 30kW
Maximum starts per hour 6 times

Material of Construction
Part Name Material
Rear cover / Bracket Cast iron
Stator Shell Cast iron / S.S / M.S
Impeller Cast iron (FG 200 / S.S AISI - 304 / Lead Bronze
Shaft SS AISI 410
Pump casing Cast iron (FG 200)
Shaft seal Nitrile butyl rubber
Thrust assembly Leaded Bronze and Compostos / Stainless Steel 420 with Graphite Carbon
Diaphragm High Nitrile butyl rubber
Journal bearings LTB 4