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Flowserve-Flowserve-Sump Pumps - ESP3

Sump Pumps - ESP3

BRAND: Flowserve

Boasting the same casing, reverse vane impeller and CBL cover as the industry-leading Durco Mark 3 TM chemical process pump, the ESP3 is ruggedly built to handle tough applications. It is the only vertical wet-pit immersion sump pump to offer parts interchangeability with standard ASME B73.1 horizontal pumps. The upshot is increased parts standardization and reduced inventory costs.


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

industry sectors

  • Pulp & Paper
  • Steel & Primary Metals
  • Other Industries
  • Basic (Organic & Inorganic)
  • Specialty (Fine & Consumer)
  • Biofuels
  • Pharmaceutical
  • Water
  • Water Management
  • Upstream Exploration & Production
  • Midstream Transportation
  • Conventional Steam
  • Combined Cycle
  • Concentrated Solar Power (CSP)
  • Biomass and MSW
Operating Parameters
  • Flows to 1300 m3/h (5700 gpm)
  • Heads to 116 m (380 ft)
  • Pressures to 12 bar (175 psi)
  • Temperatures to 180°C (350°F)
Design Range

Size Range:

  • Sizes from 25 mm (1 in) to 200 mm (8 in)
  • Pit depths to 6 m (20 ft); greater depths achievable with optional tailpipe
Features & Benefits

The ruggedly built vertical, chemical sump pump is designed to provide improved performance, increased part standardization and reduced inventory costs.

  • Increased parts standardization and reduced inventory costs from the only vertical wet-pit immersion sump pump to offer parts interchangeability with standard ASME B73.1 horizontal pumps (Durco Mark 3)
  • Repeatable performance for the life of the pump due to reverse vane impeller 
  • Reduced maintenance and downtime in difficult process fluids owing to a wide array of wetted materials, bearing materials and flush plan options
  • Low total cost of ownership made possible by many features designed to reduce costs associated with installation and maintenance


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