HQ Vertical Circulator

Vertical Circulator Multi Stage API 610 Pumps

The HQ vertical circulator multi stage pumps consist of a bowl assembly, suspended on a discharge column from a base plate at the mounting floor. The length of the column is dictated by the application.

Operation limits

Capacity up to 13,636 m³/h (60,000 gpm)
Head up to 175 m (575 ft)
Maximum Pressure 17 bar (250 psi)
Temperature up to 135 °C (275 °F)
Discharge flanges sizes 12'' to 36''
Applications Fresh water, sea water, wastewater and effluent applications, Hydrocarbons and chemicals, Cooling tower, Pipeline service, General industrial services.


  • Pumps fabricated using ASME Section IX welding procedures and qualified welders with welds stamped for quality control
  • All metal-to-metal rabbet fits sealed with O-ring gaskets
  • Continually rising head capacity curve from maximum flow to shut off
  • Non-overloading horsepower curve from best efficiency flow to maximum flow


API 610 latest edition construction available (VS1 type)

  • Head room for motor removal minimized by use of vertical solid shaft coupling construction
  • Integrally fabricated bearing spider construction of 5-foot maximum spacing between bearings
  • Cast iron bowls
  • Aluminum bronze impellers
  • 416 SS shafting
  • Integrity cast wear surfaces with optional wear rings in Bronze or SS
  • Optional materials available on request


  • Carbon steel pipe – threaded or flanged
  • AISI – 1045 carbon steel or 416 SS line shafting.
  • Optional materials available on request

Discharge Head:

  • Cast iron with 125# ANSI FF flanges
  • Fabricated steel with 150# or 300# ANSI flanges (optional)
  • Custom fabricated discharge head to meet your criteria available

Bearing Material:

  • Bronze as standard
  • Other materials and configurations available