Metering Pump OBL MB120


Metering Pump OBL MB120 are mechanical diaphragm pumps with spring return mechanism, eccentric shaft and thrust ring. They combine the working characteristics of a plunger pump with the sealing advantages of a diaphragm pump.

Thanks to the quality and simple design of the diaphragm. these pumps are easy handling.

Metering Pump OBL MB120

General Features Of Metering Pump OBL MB120 :

  • Diaphragm, economic, robust, compact metering pump.
  • The mechanical diaphragm works, both giving the swept volume, acting basically as plunger, and as separator between crank gear and the handled fluid.
  • Easy and minimum maintenance required, thanks to the reduced number of components.
  • The OBL’S unique ( patented ) mechanical diaphragm design ensures linearity between flow rate and percentage of stroke. The flow rate is virtually uneffected by the working pressure variations.
  • Leak-free pump, due to OBL’S stress proof diaphragm.
  • High working safety :
    – No External moving parts
    – Leak-free operations
  • Max. suction 1,5 m.w.c

Technical Data :

TypeMB120
Strokes/1′115
Max. Flow Rate120 l/h
Max. Pressure 6 bar ( 3 Phase ) 6 bar ( 1 Phase )
ConnectionsThreaded and Flanged
FlowRate11:50 l/h (stroke 2mm)
35÷155 L/h (Stroke 4mm.)
MotorsThree phase special 0.20 kW 4 poles – IP55
Single Phase special 0.24 kW 4 poles – IP55
PumpSingle Unit Only
Adjustment0-10 scale micrometer knob
MaterialsAluminium casing
Glass reinforced PP pump head AISI 316L
Weight10:25 Kgs

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