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DOSEURO DOSING PUMPS - Spring Return Plunger Pump SR-A series

Pump type

Capacity, max.

Pressure, max.

Power consumption, kW

Weight, kg

A-125N

156 l/h

20 bar

0,18

9,5

A-175N

408 l/h

20 bar

0,37

16

A-250N

1042 l/h

20 bar

0,75

29

A-350N

1458 l/h

4 bar

0,75

35

Plunger dosing pumps of A type are designed for precise and continuous dosing in a wide range of capacities. The construction of the pumps ensures high accuracy and reproducibility of results according to requirements of water treatment and oil and gas industry standards. All the pumps are EU certified.

Technical characteristics:

  • Pump head is made of stainless steel AISI 316 or PVC;
  • Each pump is fitted with a standard gearbox reduction system and with a vertically mounted B14 shaped electric motor in accordance with UNEL-MEC specifications;
  • The motor power range is from 0.18 Kw to 0.75 KW as the European standard: 3 phase voltages of 230/400V @ 50/60Hz, 4 pole and 1 phase voltages of 230/50-60 Hz or 110/60 Hz;
  • The reduction gearbox is of a standard endless screw plus worm-wheel type, supported by bearings, fully lubricated in an oil-bath;
  • Pump capacity is regulated with a micrometric handle which regulates the length of the rod stock travel;
  • Pump casing is made of cast aluminium covered with epoxide anti-acid paint;
  • Maximum lifting height is 3 m;
  • Protection class is IP55;
  • Plunger seal is V-shaped;
  • It is possible to make the pump in an explosion proved casing (ATEX).


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