GP (BB4) - high-pressure, back-to-back ring-section pump with between bearings design

  • Detail of a blue-painted GP pump unit (API 610, BB4 type) from Apollo Gößnitz GmbH.

    Bild01

  • Side view of a multi-stage Apollo GP process pump in accordance with API 610, BB4 sectional pump with bearings on both sides mounted on a base plate, visible in the Apollo production facility prior to acceptance testing.

    GPB BB4

  • Side view of a GP pump unit from the BB4 series, robust high-pressure centrifugal pump in back-to-back design with symmetrical bearing arrangement, manufactured by Apollo for demanding refinery applications.

    BB4 GP

Horizontal, multistage ring-section high-pressure pump, between bearings design, as back-to-back version. The process pump has excellent hydraulic characteristics, a perfectly optimized performance field, and a modern structural design.

Operation limits GP

Q (m³/h) 600
H (m) 2 500
P (bar) 250
T (° C) + 250

Application Industries

A white symbolic image with a power plant and smokestack represents energy generation. The background is blue.
A white symbolic image showing a plant with three leaves around which an electrical cable with a plug is wrapped represents the renewable energy industry. The background is blue.
A white symbolic image depicting a refinery with an oil tank, steel tower, and flame represents the refinery, oil, and gas industry. The background is blue.
A blue symbol with a chemical compound represents the chemical industry.
The fertiliser industry is represented by a blue symbol showing a pile of earth with a plant growing out of it and fertiliser spread over it.
A white symbolic image with a drop of water and wavy lines represents the water industry. The background is blue.
A blue symbol image with factories symbolises general industry.

The high-pressure pumps of the HP series are designed for pumping liquids in petrochemical plants, boiler feed water, condensate, reverse osmosis, oils, and fuels and are suitable for applications such as:

  • boiler feed water applications 
  • applications in the oil and gas industry
  • booster application in all industrial branches 
  • applications in refineries
  • water injection onshore and offshore
GP: BB4 pump with performance characteristics and pressure curve.
GP - characteristic curve
GP quarter cut
  • injector pump of “back-to-back” arrangement
  • version with NPSH impeller
  • axial thrust compensation by means of “back-to-back” arrangement of impellers
  • bearings: antifriction bearings or slide bearings
  • very stable rotor dynamics also in case of large number of stages
  • central slide bearing ensures very smooth running and low vibration values
  • very small load on axial bearings due to back-to-back arrangement, long service life
  • grey cast iron
  • ductile cast iron, ADI materials
  • cast steel
  • 12 % chromium steel
  • austenitic steel
  • special alloys
GP_lagervarianten.jpg
  • Standard Version
    Radial bearings: antifriction bearings
    Axial bearings: antifriction bearings
    Ring oil lubrication
     
  • Variant
    Radial bearings: slide bearings
    Axial bearings: antifriction bearings
    Ring oil lubrication
     
  • Variant
    Radial bearings: slide bearings
    Axial bearings: slide bearings
    Pressure oil lubrication
GP - wear-resistant design
GP - wear-resistant design
  • Injector pumps of wear-resistant design for especially abrasive liquids, liquids containing solids
  • Even on wear of clearance spaces the remaining axial thrust is changing just slightly, bearing load of axial bearing remains equally low.

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3D representation of an HP Apollo pump according to API 610, BB4 type.

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Apollo Goessnitz GmbH - European pump manufacturer from Germany. We stand for quality and innovative solutions in customised pump technology.

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