Thetys Pumps SRL
Tel: +40 744 595 445
Str. Teheran, nr. 11, sector 1,
011931 Bucuresti, Romania

Because life is fluid.


ENG  /  RO

End-suction EN733 centrifugal pumps SES and SKS – Thetys Pumps
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End-suction EN733 centrifugal pumps SES and SKS

Thetys Pumps / End-suction EN733 centrifugal pumps SES and SKS

End-suction EN733 centrifugal pumps SES and SKS


Directly off the shelf – centrifugal pumps for clean water

The end-suction centrifugal pumps SES and SKS meet the requirements of versatile water applications. The long-coupled pump SES and the close-coupled (monoblock) pump SKS are certified for drinking water.


SES is a long-coupled pump that can be delivered as a complete skid or as bare shaft pump connected to an existing electric motor.

SKS is a close-coupled (monoblock) pump with electric motor that can be supplied with a frequency converter.



Main benefits
  • Certified for use with drinking water
  • Reliable operation even in high-pressure applications
  • Easy maintenance with “back pull-out” design
  • Heavy-duty construction for continuous operation
  • Maintenance-free bearings for increased service life
  • Free position of SKS with horizontal, sloping or vertical axis to meet any installation needs
Main applications
  • Water supply facilities
  • Water distribution networks
  • Irrigation
  • Heating and cooling systems
  • General industry applications
Main design features
  • Suitable for high-pressure applications with flanges in PN 10 and PN 16
  • “Back pull-out” design makes it possible to remove hydraulic parts without having to remove the pump body from the plant pipes
  • Dynamically balanced closed impeller to minimize radial loads and provide smooth rotation of impeller
  • Suction profile designed to reduce NPSH for trouble-free operation in demanding conditions
  • Stainless steel shaft designed to withstand the bending-torsion load
  • Oversized ball bearings provide reduced working noise and a long service life
  • Large selection of mechanical seals or gland packings (SES) configured according to the requirements of the fluid characteristics and conditions of use

Optional features

  • Easy replaceable wear rings to protect the pump body and the impeller (standard for larger sizes)
  • SES: Oil-lubricated bearings with a constant level oil feeder
Key characteristics

Key characteristics SES

50 Hz 60 Hz
Capacities up to 2’000 m3/h up to 2’700 m3/h (11’889 USgpm)
Heads up to 130 m up to 120 m (394 ft)
Power up to 400 kW up to 400 kW (536 hp)
Temperatures -15°C / +90°C (+120°C on request) +5°F / +194°F (+248°F on request)
Maximum speed of rotation 3’000 rpm 3’600 rpm
Performance ranges SES
Performance ranges SKS
Municipal clean water supply and distribution process


Getting drinking water to all parts of a distribution network involves many challenges along the way. From the water treatment plant through pumping stations and beyond, Sulzer pumps lift and move the drinking water to bring it to its destination at sufficient flow and pressure.

When planning new water treatment plants or upgrading existing ones, operating costs are as important as investment costs. Sulzer’s innovative pumps, mixers and compressors combine reliable treatment performance with superior energy efficiency.

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