PRELF end suction pump range

Tailored low flow process pump hydraulic to suit your application

The PRELF is our API 610 (ISO 13709) Type OH2 overhung, horizontal, centerline mounted, single stage, centrifugal process pump, specifically designed for very low flow applications. The compact design offers minimum footprint with reliability and minimum pump life cycle cost. Variable machining options the solution to challenging low flow centrifugal pump services across the Oil & Gas & Petrochemical industry.

PRELF end suction pump
Main benefits
  • Centerline mounted to allow thermal expansion without jeopardizing the shaft alignment
  • Adjustable impeller clearance for long term high hydraulic efficiency
  • Extra heavy-duty shaft for low shaft deflection and long life of seal and bearings
  • Impeller and casing machining to optimize operation at BEP (best efficiency point) Inducer option to meet customer NPSH restrictions
Main applications
  • Flare Knock Out (KO) drum pump
  • Wash water
  • Reflux services
  • Caustic circulation and transfer
  • Process or sour water drains
Main design features
  • Sulzer designed multi-vane open radial impeller
  • Stable performance curve with rising head to shut off
  • Robust shaft for minimal deflection
  • Splash oil, purge mist or pure mist lubrication available
  • 300# flange rating standard
Key characteristics
Capacities Low flow design from just 3m3/hr / 12 US gpm
Heads up to 210 m. / 690 ft.
Pressures up to 40 bar / up to 580 psi
Temperatures -46 to 180°C / -51 to 356°F
Performance range
PRE Performance Range 50 Hz
Performance range 50 Hz
PRE Performance Range 60 Hz
Performance range 60 Hz
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