GSB-L2 Series Vertical High-speed Centrifugal Pumps
Name: GSB-L2 Series Vertical High-speed Centrifugal Pumps
Flow Range: 0.5 m³/h ~ 90 m³/h
Head Range: 250 m ~1220 m
Motor Power: 37 kW ~ 132 kW
Operating Temperature: -60℃~340℃
Velocity Range: 7850 rpm ~ 22700 rpm

Safe, reliable and economical the Sundyne API 610, OH6, Integrally geared pump
API 610, 11th Edition OH6 Integrally Gear Driven Pumps are engineered for critical high-head, low-flow, heavy-duty services required by process and rotating equipment engineers within the hydrocarbon, chemical, petrochemical, power generation, gas production, and specialty processing industries. Sundyne pumps are renowned for high suction pressure and a wide range of operating temperatures.

Unlike conventional multi-stage pumps, our computer tailored hydraulics place the B.E.P. (best efficiency point) at the rated point resulting in optimum efficiency. An added benefit is reduced end-of-curve horsepower, allowing for smaller driver sizes resulting in energy savings.

Flows to 230 gpm (42 m³/hr)
Heads to 3,000 ft (1,348 m)
Suction Pressure 450 psi (32 kg/cm²)
Temperature Range -200 to 650°F (-130 to 340°C)

GSB-L2 Series Vertical High-speed Centrifugal Pumps
Structure type: Single-stage Single-suction Straight Blade Vertical Part-flow High-speed Centrifugal Pumps
Manufacturing Standard: API 610
Model Description:

GSB – L2 – Flow / Head
1 2 3 4

  1. GSB: High-speed Pumps
  2. L2: Vertical two-stage speed increase
  3. Flow: Design point flow (m³/h)
  4. Head : Design point head (m)
    Applications: Petroleum, petrochemical, refining, pharmaceutical, metallurgy, paper-making, electric power, foods, light industry, etc.
    Pumped medium: Various liquid media, such as acids, alkalies, salts, alcohols, benzenes, alkanes, medicines, waters, etc.

Features: GSB-L2 Series Vertical High-speed Centrifugal Pumps are single-stage, single-suction, vertical part-flow centrifugal pumps. The inlet and outlet flanges of the pump body form the symmetry on the same horizontal line, with strong structure rigidity and high piping bearing capacity. The impeller uses the open-type straight blade centrifugal impeller arranged on the output shaft of the speed-increasing gearbox, which can enhance the pump’s efficiency point and hydraulic performance. Unique pump case diffuser design guarantees the cuttability of the inherent head, without worrying about the motor overload caused by the change of the working conditions or misoperation. The front-mounted inducer design can enhance the suction performance and high cavitation performance, and reduce the pump’s NPSHr. The high-speed shaft bearing uses the copper alloy sliding bearing. Its good lubrication system makes its linear velocity up to 50m/s. The pressure of the main lubrication oil circuits is supplied by the cycloid oil pump built in the speed-increasing gearbox, and driven by the low-speed shaft through direct connection. The perfect oil circuit testing system guarantees the pump’s long-term, safe, reliable running.

Multi-stage performance in a single stage pump
The vertical configuration of the integrally geared line of Sundyne pumps is specifically designed to save valuable space in refineries, NGL production, petrochemical and chemical plants.


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