QL and QLQ Vertical Double Suction, Twin Volute Wet Pit

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Flowserve QL and QLQ Vertical Twin Volute Double Suction Wet Pit Pumps for cooling and raw water systems

Introduction Features Literature

Flowserve QL and QLQ Vertical Twin Volute Double Suction Wet Pit Pumps for cooling and raw water systemsQL and QLQ Vertical Double Suction, Twin Volute Wet Pit

Brand: Worthington
Description:

The Flowserve QL and QLQ are vertical wet pit pumps featuring a double suction impeller and twin volute casing. Designed for continuous operation in high-flow, low-to-medium head applications, these pumps are ideal for circulating water, cooling systems, raw water intake and other wet pit services. Their twin volute construction minimizes radial forces while the vertical design saves space and simplifies sump installations.

The Flowserve QL vertical, double suction pump has a single impeller and true twin volute design that produces more head and can operate at higher speeds than conventional, multistage vertical turbine models. It can be used in all wet pit applications and virtually eliminates erosion and corrosion of the shaft, bearings and all internal components.

QL and QLQ Vertical Double Suction, Twin Volute Wet Pit Applications:

Water Supply and Distribution (water), Descaling, Water and CO2 Injection, Agriculture, Flood Control, Cooling Water (metals), Sewage Collection and Treatment, Dewatering and Water Supply (mining), Fire Protection, Water Treatment, Ground Water Development and Irrigation, Leaching Acid, Cooling Water (power)

  • Industries:
    General Industries, Mining, Water Resources, Power Generation, Primary Metals, Oil and Gas

Double Suction (First Stage) Impeller features large passageways and produces balanced hydraulic thrust for a stable performance curve with low shut-off pressure.  The double-suction design on multistage pumps permits higher head and orating speed than vertical turbine models while maintaining excellent suction attributes.

Heavy Walled, Twin Volute Casing with robust transition diffuser moves liquid from casing to column through large waterways at low liquid velocity, minimizing corrosion, erosion and radial loads on bearings.

Suction Bells efficiently direct liquid into the impeller inlets with minimum resistance.

Bottom Liquid End Bearing is sealed for life with grease.

Optional Impeller Wear Rings enable restoration of original clearances for increased efficiency.

Operating Parameters

  • Flows to 25 000 m3/h (110 000 gpm)
  • Heads to 500 m (1640 ft)
  • Pressures to 70 bar (1015 psi)
  • Temperatures to 200°C (400°F)
  • Column sizes to 1500 mm (48 in)

QLC and QLQC Series Pumps Poster

QL Series Pumps Bulletin

QL and QLC Centrifugal Pumps User Instructions

Handling high flow from open pits or sumps? The QL and QLQ pumps provide reliable wet pit performance with balanced hydraulics and space-saving vertical design. Let’s select the right pump for your cooling or intake water application.