OBL Blackline L Series Topline Pluger

OBL Blackline L Series Topline Plunger, API 675 pump ideal for high pressure, high volumes dosing applications. Capable of handling pressures up to 500 barg (7.252 psi) and flowrates up to 5.500 lt (1.210 gph) in single-head configuration, the plunger

L series pump is ideal demanding industrial applications such as high-pressure boiler feed, catalysts dosing, scale and corrosion inhibitors dosing. Designed to meet the highest standards in metering industry, this positive return plunger pump has a modular design that can house multiple heads to perfectly match your dosing needs. Separate oil reservoirs reduce the risk of oil contamination of process liquid and ensures steady and accurate output.

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OBL Blackline L Series  Specification

  • Flow rate from 0,2 to 5.500 l/h (0,04 to 1.210 gph)
  • Working pressure up to 500 barg or 7.252 psi
  • Chemical resistant coated cast iron enclosure
  • AISI 316 and PVC liquid end
  • Manual stroke length adjustment, electronic actuator available
  • Built-in relief valve, air purge valve and self-replenishing hydraulic system
  • Built-in diaphragm rupture detection system
  • Capable of handling fluid temperatures up to 280°C
  • Steady-state accuracy ±1%, linearity ±3%, repeatability ±3%
  • API675 and ATEX 2014/34/UE compliant
  • NEW: EC 1935/2004 “Food Contact Regulation” configuration available

OBL Blackline L Series  Application

  • Industrial : Water Treatment
  • Waste Water Tratment
  • Chemical & Petrochemical
  • Mining


OBL makes high quality, plunger, directly driven and hydraulically driven membrane dosing pumps.

The OBL plunger dosing pumps are available in API 675. These OBL pumps are available for pressures of up to a maximum of 400 bar. Because of the pumps robust construction it is highly suited for continuous use.

OBL’s directly driven membrane dosing pumps are available up to a maximum capacity of 520 litres per hour and a maximum pressure of 12 bar.

This series of pumps comes equipped with an anodised gearbox which makes these pumps resistant to corrosion and so they are highly suited to environments with a corrosive atmosphere.

The OBL hydraulically driven membrane dosing pumps come in a wide range of designs.The best of the bunch are the API 675 pumps as they are the front runners in terms of technology.

In addition to these OBL pumps reaching a maximum pressure of 250 bar and have a highly robust design, they also have a unique recirculation system for the barrier liquid. This system ensures the barrier liquid is released when under too much pressure, which means the pumps can operate against a closed press and that the barrier liquid automatically returns once the pressure in the discharge line drops once more. These OBL pumps are unique as in contrast to other brands, these pumps keep operating under a high vacuum.

Reference : oblpumps.it

Download : Datasheet L-ITA

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