Ashish Auto

CRI Regenerative Monoset Pump (ARM & ASM Series)

C.R.I. Regenerative Monoset Pumpsets volute chamber and impellers are designed to give the best possible hydraulic efficiency and suction lift characteristic. Sealing is by means of a bellows mechanical seal made of carbon & ceramic is fitted over the shaft, which is ground to close tolerance. Brass insert provided inside the pumpset reduces wear & tear, ensure durability and prevents the pumpsets from seizing, if it is kept idle for long Period. These pumpsets are with inbuilt check valve on the sunction side and there is no need for foot valve. Pumpsets are powered by a totally enclosed fan cooled, AC induction two pole and four pole motors suitable for continuous duty. Motor stator is made of low watt loss steel lamination.

Dynamically balanced rotor ensures vibrations and noise free operations. Constructions of motor frame and usage of quality materials resultĀ  in high performance and low temperature raise, thereby increasing the life cycle of the motor. T.O.P (Motor protector) is incorporated in single-phase motors. Three-phase pumpsets require an adequate motor protection control panel.

Applications :

  • Domestic
  • Gardens
  • Washing
  • Civil applications

Salient Features :

  • Good suction lift characteristics
  • Dynamically balanced rotating parts
  • Balanced and rigid construction

Pumped Liquids : Clean, Thin, non-aggressive, non explosive, clear, cold, fresh water without abrasives, solid particles or fiber having the following characteristics.


Power 0.37kW – 0.75 kW (0.5HP& 1HP)  
Frequency / Speed 50 Hz / 1440 RPM
Versions Single phase, 200-240 V, 50 Hz, A.C Supply capacitor start and capacitor run (CSCR) and motor is  incorporated with thermal cutout relay ( motor protector)
Maximum flow rate 1.2 lps (4.3 M3 / Hr)
Maximum total head 45 mtrs
Maximum operating Pressure 4.5 bar
Degree of protection  IP 44
Class of Insulation ‘A’
Direction of Rotation Clockwise viewed from driving end
Type of duty S1 (Continuous)
Sealing Mechanical Seal (Carbon & Ceramic)
Maximum suction lift in metre 8 (slow speed )& 3.5 (High Speed)
Maximum liquid temperature 33oC
Maximum Ambient Temperature 40oC
Nominal Pump size in inches (Suction x Delivery) 1 &1

Material of Construction

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

Characteristics of Clear Cold Water

Maximum liquid temperature 33 oC
Permissible amount of sand 25 gm/m3 (max.)
Chloride ion density 500 ppm (max.)
Allowable Solids 3000 ppm (max.)
Specific Gravity 1
Hardness (Drinking water) 300
Viscosity 1.75 x 106 m2/sec
Turbidity 50 ppm silica scale
PH value 6.5 to 8.5