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OH1/CH Series


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Horizontal, radially split  volute casing pump in back pull-out design, with radial impeller, single-entry, single stage, to EN 22 858/ISO 2858/ISO 5199.


  • Flow rate (Max.):   500 m3/hr
  • Differential head (Max.): 130 m
  • Speed (Max.): 3000 rpm
  • Suction pressure rating: Up to 6 bar g
  • MAWP: 16 bar g
  • Operating temperature: -15 ˚C to 120 ˚C
  • Design temperature: 80 ˚C
  • Application

    • Chemical and petrochemical processes
    • Refinery off-sites
    • Paper and cellulose industries
    • foodstuffs industry
    • sugar industry
    • sea water desalination plants
    • power stations
    • Drainage systems
    • Heating systems
    • Air-conditioning systems
    • Slurry processing
    • waste processing
  • Benefits

    • Reverse vane impeller delivers efficiency and performance and providing optimal, predictable seal chamber pressure and thrust loads
    • Abrasive wear is on the rear cover rather than the more expensive casing
    • Robust, solid shaft extends mechanical seal life
    • External micrometer enables accurate impeller clearance setting, restoring pump efficiency
    • Two-piece bearing housing provides strength and facilitates interchangeability
    • Non-contacting labyrinth oil seals and flingers
    • Special arrangement of bearings provide excellent axial and radial load support
    • Oil-lubricated bearing housing bath
  • Options

    • Large range of materials for many applications available
    • Gland packing and single mechanical seal as options for shaft seal
    • Electric and diesel drivers available
    • Local control panel and instrumentation
    • Constant level oiler as an option for lubrication system
    • Various types of baseplate designs to suit customer requirements

ASK Hydraulic Coverage

OH1/CH series


Other hydraulics on request


  • Catalogue

    OH1/CH- Catalogue 2015

  • Data-sheet Form

    OH1/CH- Compact Data-sheet