SJM vertical mixed flow pump

Vertical mixed flow pumps featuring modern hydraulics

The SJM pump is a vertical, single or 2-stage, mixed flow bowl diffuser and is typically used wherever a liquid needs to be pumped upward at moderate pressure from open bodies of liquid. Fully updated hydraulics and mechanical designs make the SJM highly efficient and cost-effective.

SJM vertical mix flow pump
Main benefits
  • Optimized hydraulics for high efficiency
  • Packed stuffing box for reliable sealing and simple maintenance, mechanical seal is optional
  • Rubber-lined product-lubricated bearing in bowls and columns for long maintenance-free periods, other bearing materials are also available
  • Spacer coupling allows servicing of the seal and thrust bearing as required
  • Full pull-out design available in bowl diameter sizes > 50" to ease dismantling and maintenance
Main applications
  • Cooling water circulation in conventional and renewable power stations
  • Water supply
  • Booster service
  • Irrigation supply
Main design features
  • Engineered to order vertical mixed-flow type provided with semi-open impeller
  • Suction bell provided with anti-vortex ribs, tail bearing, and a replaceable bowl liner
  • Axial thrust bearing in pump or in motor
  • Bowl cast or fabricated (bowl diameter sizes > 50")
  • Full pull-out design available (bowl diameter sizes > 50")
Key characteristics
Capacities Up to 58,000 m3/h  /  250,000 US gpm
Heads Up to 30 m per stage  /  100 ft per stage
Pressures Up to 18 bar  /  260 psi
Temperatures Up to 50°C  /  122°F
Performance range
SJM Performance Range 50Hz
Performance range 50 Hz
SJM Performance Range 60Hz
Performance range 60 Hz
Case studies
  • 12 million benefit from ambitious water pumping project
    June 24, 2020
    In Brazil, the government has been looking to bring relief to a semi-arid area in the northeast of the country that is home to 12 million people. Sulzer designed and manufactured six of the largest pumps in the project, to transfer water from the São Francisco River to the drought-affected area.

  • Cooling water turnkey system for EDF's CCGT power plant
    EDF Energy’s combined-cycle gas turbine (CCGT) power plant at Bouchain in Northern France has already earned a place in the record books. Sulzer was contracted to deliver the design and manufacture two large cooling water pumps at Bouchain power plant. The scope of Sulzer's working including the desing of the suction take.

  • One supplier for all pump applications
    Sulzer has been developing, designing, building and supporting pumps for power station applications for decades. The company’s pumps are used in almost every type of power plant, including nuclear, solar, gas-fired and biomass facilities. As such, it is the preferred supplier for some of the world’s largest and most demanding projects. Take the example of a major new project recently completed in Europe.
Applications
  • Cooling water pump (CWP) for gas-fired
    Cooling water pumps (CWP) provide the fresh water to cool the exhaust steam in the condenser and pump it back to the wet cooling tower or the outlet of open cooling system. The major characteristic of the CWP is their high flow. In medium to large size gas-fired combined-cycle power plants, the CWP are vertical column type. In small power plants, the CWP could also be horizontal axially split type.

  • Cooling water pump (CWP) for geothermal plants
    Sulzer offers a variety of cooling water pumps, all made to provide your processes with the optimum temperatures for your processes. Installed in a water cooled condenser, the pumps will be active for your specific process.

  • Cooling water pump for coal- and oil-fired
    Cooling water pumps (CWP) provide fresh water to cool the exhaust steam in the condenser and pump it back to the wet cooling tower or the outlet of open cooling system. The major characteristic of the CWP is their high flow. In medium to large size coal- and oil-fired power plants, the CWP are vertical column type. In small coal and oil captive power plants, the CWP could also be horizontal axially split type.

  • Cooling water pump for heliostat central tower with direct steam generation
    Cooling water pumps (CWP) provide fresh water to cool the exhaust steam in the condenser and pump it back to the wet cooling tower or the outlet of open cooling system. The major characteristic of the CWP is their high flow. CWP are vertical column type. In small plants, they can be horizontal axially split type.

  • Irrigation
    We provide pumps for the water supply for gravity and pressurized irrigation systems. For these applications, we offer vertical and horizontal pumps that are especially constructed to highly challenging pumping and energy efficiency requirements.

  • Water intake
    Raw water to be desalted, either sea water or brackish water will be taken from natural resource and pumped to pre-treatment stage. For sea water abstraction, different intake arrangements can be considered, which will define the pump type to be installed.

  • Water intake
    Water supply is vital for our daily life. To abstract the water at the source, be it the sea, river, lake or dam, water intake pumps are needed. Sulzer offers a range of pumps that are specially engineered for such applications.

  • Water supply
    Meeting today’s challenges and high requirements within water intake, sedimentation, sludge treatment, fine screening, and water distribution processes.
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