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Surface Pumps
Multistage Pumps
—  MH Series
—  MHsp Series
—  VR Series

MHsp Series

Evolving from the technology of the horizontal multistage pump MH, MHsp features a design innovation of a special elastic valve system allowing air, present in the system, to escape – suction height up to 7 meters in less than 5 minutes. During start, this elastic valve, which is located at the first stage, opens to allow air to escape out of the system and water to enter the pump. As soon as the pressure arrives at a certain point, the valve closes, and the pump reaches the required performance. This makes the MHsp the only stainless steel AISI304 self-priming horizontal multistage pump in the market.

Features

  • Compact close-coupled design, robust and corrosion resistant
  • Superior efficiency and performance
  • Flexible application base plate
  • Floating neck ring in PPS
  • Heavy duty oversize motor shaft
  • Impellers and diffusers are made of stainless steel in order to achieve durability
  • Easy maintenance
  • Strong and leak-proof motor ball bearing fitted in the motor
  • Pumping of clear non-loaded fluids
  • Mechanical seal Type E0 = carbon/ceramic/EPDM

Pump Specifications

  • Flow:
    • up to 8 m³/h at 50 Hz
    • up to 8,5 m³/h at 60 Hz
  • Head:
    • up to 104 m at 50 Hz
    • up to 77 m at 60 Hz
  • Connections: Rp threaded for inlet and outlet
  • Maximum working pressure: 10 Bar
  • Maximum ambient temperature: 40 °C
  • Liquid temperature range: from 0 °C up to 35 °C
  • The hydraulic characteristics are guaranteed, according to ISO standard 9906:2012, grade 3B

Motor Specifications

  • Single-phase
  • Three-phase motor efficiency class IE3
  • Asynchronous, TEFC (Totally Enclosed, Fan-Cooled)
  • 2 pole
  • Protection IP55, insulation class F
  • Standard voltage:
    • Single-phase: 220-240 V ±5 % (Thermal protection built into the motor)
    • Three-phase: 220-240 V / 380-415 V ±5 % up to 3 kW (Thermal protection to be provided into the starter panel by the installer)
  • Frequency of starts: Max. 60 starts/hour for motor power up to 3 kW (with min. 1 minute resting time)

Available on request

  • Discharge inlet/outlet NPT

3 MHsp – Table of Hydraulic Performance at 50 Hz

Phase Model No.stages Q = DELIVERY
l/min 0 25 33 42 50 58 67 75
m³/h 0 1.5 2 2.5 3 3.5 4 4.5
US GMP 0 6.6 8.8 11.0 13.2 15.4 17.6 19.8
H = TOTAL HEAD OF WATER COLUMN [m]
1 ~ 3 MHsp 4 43.5 38 35 32 28.5 24.5 20 15
5 54 46.5 43 39 34 29 23.5 17
57
3 ~ 4 44.6 40.4 37.8 34.7 31.1 27.1 23.2 18.5
5 55.1 49.4 46.1 42.2 37.7 32.7 27.7 21.9

5 MHsp – Table of Hydraulic Performance at 50 Hz

Phase Model No.stages Q = DELIVERY
l/min 0 33 42 50 58 67 75 83 92 100 117
m³/h 0 2 2.5 3 3.5 4 4.5 5 5.5 6 7
US GMP 0 8.8 11.0 13.2 15.4 17.6 19.8 22.01 24.2 26.4 30.8
H = TOTAL HEAD OF WATER COLUMN [m]
1 ~ 5 MHsp 4 46.4 42.8 41.6 40.4 39.1 37.6 35.9 33.9 31.6 29.1 22.7
5 57.6 52.8 51.2 49.6 47.9 45.9 43.7 41.1 38.2 35 26.9
3 ~ 4 46.2 42.4 41.1 39.9 38.5 37 35.2 33.2 30.9 28.4 21.9
5 57.3 52.1 50.4 48.8 47 45 42.7 40.1 37.2 34 25.8