MB series

MULTIPURPOSESUBMERSIBLE PUMPS

SERIES MB

The MB-series of the “TSURUMI AVANT” brand is developed for heavy-duty performance and low-maintenance operation. These pumps can be used for various applications to pump, drain and transfer rainwater, wastewater, sewage, ground water or ponded water in residential, industrial, and construction sites.

Compact in size, the MB-series pumps are built to run stably and reliably with EN-GJL-250 cast iron body and impeller, AISI 431 stainless steel shaft and dual inside mechanical seals with silicon carbide faces in the clean oil chamber.

The MB-series comes in a wide array of models outfitted with either a Vortex or High Head impeller, single- or three-phase motor and drive outputs ranging from 0.37 - 1.5 kW. Users can also select an automatic model equipped with a simple float switch that prevents dry-running operation and reduces power consumption.

SewageSewage DrainageDrainage

Characteristics

  • Ergonomic “Techno-polymer” lifting and carrying handle with excellent mechanical strength and corrosion resistance. Clip float switch adjustment.
  • Innovative cable gland system with twin O-rings to ensure maximum tightness.
  • Dry motor with thermal protections. Single-phase models with internal capacitor. Three-phase models with motor protection relay (option).
  • Two silicon carbide mechanical seals (2SiC), and V-ring in direct contact with the liquid.
  • Oil sump which guarantees longer mechanical seal lifetime, and is easily accessible to simplify maintenance procedures.
  • Air release valve which allows the air to be vented and ensure reliable pump priming even after long periods out of use.
  • Simple construction with a minimal number of nuts, bolts and other parts to facilitate maintenance.

Features

HANDLE

HANDLE

Ergonomic handle made of “Techno-polymer” and styled for optimal grip.
Shaped to take a shackle to hold the pump steady during handling.

CABLE GLAND

CABLE GLAND

Innovative cable gland system with cable holder system and twin O-rings to ensure maximum tightness. Simpler extraction for maintenance.

PRESSURISED TESTING

PRESSURISED TESTING

Stud bolt for closing the motor compartment for the pressurised testing, performed on every pump unit.

PAINT

PAINT

Pumps of the Tsurumi Avant brand feature a higher grade of external coating. MB-series pumps are coated in an 120 µm film of ecological bicomponent epoxy, particularly strong against corrosion.

CAPACITOR

CAPACITOR

Models with a single-phase motor have an internal capacitor. Since high temperatures due to heat exposure are the biggest cause of capacitor damage, the capacitor is installed inside a cast iron housing at the lowest point possible within the motor. A metal contact inside the housing releases heat to keep the motor cool even during operation in shallow water. These design details greatly extend the service-life of the capacitor.

ADJUSTABLE FLOAT SWITCH

ADJUSTABLE FLOAT SWITCH

Float switch stroke adjustment system for modification of start-stop levels.

Automatic Operation

  • 1

    Pump starts operating when the water level rises to a preset level.

  • 2

    Pump keeps running while the float switch remains on.

  • 3

    When the water level lowers to the preset level, pump stops operating.

The process is repeated.

CASE and STAND

CASE and STAND

The EN-GJL-250 cast iron construction is durable enough to stand up to maintenance requiring removal and replacement of the motor.
The EN-GLS-600 ductile cast iron used for base stand is resistant to impact force and can withstand the impacts of dropping.

MECHANICAL SEALS

MECHANICAL SEALS

Two silicon carbide (2SiC) mechanical seals in oil chamber.

V-RING

V-RING

The V-Ring in direct contact with the liquid protects the mechanical seals from foreign bodies to keep them in good working condition.

OIL CHAMBER

OIL CHAMBER

Guarantees longer mechanical seal lifetime and is easily accessible to simplify maintenance procedures.

FREE PASSAGE MBU

FREE PASSAGE MBU

Full free passage allowing the expulsion of solids up to 50 mm and preventing fouling of the impeller.

AIR RELEASE VALVE MBU

AIR RELEASE VALVE MBU

The air release valve vents air that accumulates inside the pump after the pit empties, effectively preventing air locks and ensuring reliable pump priming even after long periods of disuse.

* MBS-series design does not require the air release valve.

HANDLE

1

CABLE GLAND

2

PRESSURISED
TESTING

3

PAINT

4

CAPACITOR

5

ADJUSTABLE FLOAT SWITCH

6

CASE and STAND

7

MECHANICAL SEALS

8

V-RING

9

OIL CHAMBER

10

FREE PASSAGE
[MBU]

11

AIR RELEASE VALVE
[MBU]

12
  • MBU (Vortex)

    80% or more free passage against discharge bore

    MBU (Open Channel) MBU (Open Channel)
    • MBU

      Automatic

    • Vortex impeller

      Adapter for
      0.37-0.74 kW

    Range characteristics

    • Power supply1-phase, 3-phase
    • Frequency50 Hz, 60 Hz
    • Power0.37 - 1.5 kW
    • Poles2
    • Discharge bore2˝ threaded
    • Free passagemax 50 mm
    • Max flow rate756 l/min
    • Max head15.3 m
    • Hydraulics
      • Cast iron vortex impeller
      • Full free passage
    • Suitable for
      • Sewage
      • Soiled wastewaters with solids
      • Lifting stations in civil and residential plants
  • MBS (High Head)

    Highest head available amongst Tsurumi pumps with 0.74 - 1.5 kW
    single/three-phase motors

    MBS (High Head) MBS (High Head)
    • MBS

      Automatic

    • Multi-channel
      open impeller

      90º bend

    Range characteristics

    • Power supply1-phase, 3-phase
    • Frequency50 Hz, 60 Hz
    • Power0.74 - 1.5 kW
    • Poles2
    • Discharge bore1½˝ threaded
    • Free passagemax 6 mm
    • Max flow rate450 l/min
    • Max head26.6 m
    • Hydraulics
      • Cast iron multi-channel open impeller
      • High manometric head
    • Suitable for
      • Mainly clean liquids, or liquids with small solids or sand
      • Slightly sandy seepage waters
      • Ideal for construction of fountains and water features
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