Multistage Centrifugal Pumps
Horizontal Multistage Pumps MHS, MHB & MD - Series

Horizontal Centrifugal Pumps

C.R.I.'s Horizontal Multistage Centrifugal Pumps (MH Series) are non self priming, axial suction and vertical radial delivery type threaded parts. All vital components like impellers, diffusers & shaft of these pumps are made of corrosion resistance AISI Stainless Steel and designed to deliver the best possible hydraulic efficiency. The pump and motor are connected with a single drive shaft to eliminate any transmission loss. 'O' ring and gasket prevents leakage at the intermediate casing during high pressure. Mechanical seal of these pumps are made of ceramic and carbon graphite to ensure reliability and easy replacement. These pumps are powered by a totally enclosed fan cooled. A.C. induction motor, suitable for continuous Duty. Motor stator is made of low watt loss steel lamination assembled under pressure and rigidly locked in the frame.Dynamically balanced rotor ensures vibration and noise free operation and the varnished impregnated winding made of enamelled copper wire offer excellent resistance. Thermal over load protector is incorporated in all single phase motors.

Specifications MHS MHB MD Series
Power Range 0.22 kW to 2.2 kW 0.25 kW to 1.8 kW 0.37 - 3.0 kW
Speed 2900 rpm 2900 rpm 2900 rpm
Versions A.C. Single Phase - 230V, 50Hz
Permenent Split Capacitor (PSC)
Inbuilt Thermal Overload Protector
A.C. Three Phase - 380V / 415V, 50Hz
A.C. Single Phase - 230V, 50Hz
Permenent Split Capacitor (PSC)
Inbuilt Thermal Overload Protector
A.C. Three Phase - 380V / 415V, 50Hz
AC, Single pahse 230V 50Hz
Permrnrnt Split capacitor
Inbuilt Thermal overload protector
A.C. Three Phase 380V / 415V, 50Hz
Type of Duty S1 (Continuous) S1 (Continuous) S1 (Continuous)
Degree of Protection IP 54 IP 55 IP 55
Class of Insulation B (Optional ‘F’) F F
Discharge Range 1 - 14 m³/h 0.6 - 6.8 m³/h 1 - 2.8 m³/h
Head Range 5 - 57 m 12 - 70 m 5 - 65 m
Suction lift up to 5m 2m -
Sealing Type Mechanical Seal - Carbon Ceramic Mechanical Seal - Carbon Ceramic Mechanical seal - Carbon ceramic
Max. Liquid Temperature 90°C 50°C 10-70°C
Max. Ambient Temperature 40°C 40°C 50°C
Max. Operating Pressure 0.55 MPa (5.5 bar) 0.7 MPa (7 bar) 10 bar
Nominal Suction & Delivery Sizes 1" X 1", 1½ X 1¼", 1½" X 1½" 1" X 1", 1¼" X 1¼" 1" X 1", 1¼" X 1,1½" X 1½"", 2" X 2",
MHS - 50 Hz
Flow m³/h 2.5 5 8 12
Head Maximum m 55 54 53 57
Nominal inlet and outlet size inchens 1 x 1 1 x 1 1½" x 1¼" 1½" x 1½"
MHB - 50 Hz
Flow m³/h 1.2 2.4 3.6 4.8 6.8
MD - 50 Hz
Flow m³/h 2 4 6 8 10 12 16 20 24 28
  • High operating efficiency
  • Precise parts for hygiene
  • Good suction lift and operating charecteristics
  • Dynamically balanced rotating parts
  • Balanced and rigid construction
  • Available M.O.C. Type S, L, N & B
  • Inbuilt thermal overload protector in all single phase pumps
Part Name Material
Motor Casing & Bracket CI / Casted SS
Impeller SS 304
Diffuser SS 304
Motor Frame Al
Shaft SS 304 / 410
Mechanical Seal Ceramic & Carbon
Base Plate MS
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