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Regenerative Monoblock Pumps - NR & ENR series

C.R.I. Regenerative monoset pump's volute chamber and impellers are designed to give the best possible hydraulic efficiency and suction lift characteristics. Sealing is by means of a bellows mechanical seal made of carbon and ceramic is fitted over the shaft, which is ground to close tolerance. These pumps are power-driven by a totally enclosed fan cooled A.C. induction two-Pole motor, suitable for continuous duty. Motor stator is made of low watt loss silicon steel laminations assembled under pressure and rigidly locked in the frame. Dynamically balanced rotor ensures vibration free and noise free operations and increase the life of the bearings and seal.

Features Specifications (MOC) Pump
  • Built-in with imported motor protector
  • Intended for wide voltage fluctuations
  • Powder coated stator body
  • Sturdy and compact
  • Double sealed ball bearing
Power 0.185kW – 0.75 kW (0.25HP-1HP)  
Frequency / Speed 50 Hz / 2880 RPM
Versions Single phase, 200-240 V, 50 Hz, A.C Supply Permanent split capacitor (CSR) incorporated with thermal cutout relay ( motor protector)
Fow rate upto 0.92 lps (3.3 m3/h)
Maximum total head upto 50 metres
Maximum operating Pressure 5.0 bar
Degree of Protection  IP 44
Class of Insulation B
Direction of Rotation Clockwise viewed from driving end
Type of duty S1 (Continuous)
Sealing Mechanical Seal (Carbon & Ceramic)
Maximum suction lift in metre up to 8
Maximum liquid temperature 33o c
Maximum Ambient Temperature 40o c
Nominal Pump size in inches (Suction x Delivery) ½ x ½ , ¾ x ¾  & 1 &1

Material of Construction of Pump
Part Name Material
Pump Casing Cast Iron
Motor Frame Aluminium
Impeller Brass 
Shaft Stainless Steel
Sealing Mechanical Seal (Carbon & Ceramic)