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Flowserve-Flowserve-Double Case Pumps - APKD

Double Case Pumps - APKD

BRAND: Flowserve

The double case APKD features an innovative, double suction impeller in a true twin-volute design that produces more flow and higher head at lower NPSHR and can operate at higher speeds than conventional vertical turbine pump models.


  • Power
  • Oil & Gas
  • Chemical
  • Water
  • General Industry

industry sectors

  • Nuclear
  • Conventional Steam
  • Geothermal
  • Combined Cycle
  • Concentrated Solar Power
  • Biomass and MSW
  • Upstream Exploration & Production
  • Midstream Transportation
  • Downstream Processing
  • Basic
  • Water
  • Other Industries
  • Flowserve
  • Hydraulic Institute
  • AWWA E103 ISO 13709 / API 610
Operating Parameters
  • Flows to 4600 m3/h (20200 gpm)
  • Heads to 500 m (1640 ft)
  • Pressures to 50 bar (725 psi)
  • Temperatures from -45°C (-50°F) to 95°C (200°F)
  • Speeds to 1800 rpm
Design Range

Size Range:

  • Sizes from 23APKD to 36APKD
Features & Benefits
  • Broad hydraulic versatility through a series of impeller design options enables better hydraulic fit for each application
  • The result is lower energy consumption and operating costs
  • Double suction first stage impeller reduces NPSHR and meets Hydraulic Institute standards for suction-specific speed
  • This design means a shorter, more rigid pump, providing freedom from cavitation over a wide operating range
  • Double volute design minimizes radial loads, extending bearing life
  • Suction can creates optimal hydraulic conditions through the suction flange inlet into the suction bell
  • Rigid, adjustable flanged coupling maintains accurate pump-motor alignment, provides proper impeller clearance adjustment and facilitates seal maintenance


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