Blackmer S Series Triple Screw Pumps

Blackmer® – part of PSG®, a Dover company logo
The Blackmer® S Series Triple Screw Pump is specifically designed to tackle the toughest application challenges in the oil and gas, process, and marine industries. These pumps provide smooth and constant flow regardless of the operating pressure, temperature, and viscosity. They are most efficient at transferring clear, lubricating liquids without solid content. The S Triple Screw pumps, like their twin screw counterpart, are self-priming, double-ended, compact, reliable, and environment-friendly and can be ATEX-certified for use in explosive areas.


Abaque Peristaltic Pump HD25 model

Design Advantages

  • Uniquely constructed pressure relief valve for pump and system safety
  • Rigid parts translate to longer life and maintenance intervals resulting in increased uptime
  • Strong self-priming capability, reversible pumping, high volumetric efficiency
  • Smooth, pulse-free operation with extremely low noise and vibration
  • Easy to install and maintain with compact size and construction
  • Higher pressure boost and high energy efficient design

Available Options

  • Bearing options
  • Spare parts
  • Mounting plates

Get in touch with our experts to know more about your options.

Key Specifications

  • Capacity: 2-2600 L/min
  • Pressure: Up to 100 bar
  • Viscosity: 3-5,000 mm²/s (cSt)


  • Chemicals
  • Adhesives
  • Food and beverage
  • Soap
  • Petrochemicals
  • Polymers
  • Crude oil
  • Asphalt
  • Diesel
  • Lube oil
  • Kerosene
  • Oilfields
  • Residuals
  • Bulk transfer
  • Loading/unloading
  • Terminals
  • Shipping


3N10-2,600Up to 403-5,000
3M10-2,600Up to 1003-5,000
3PF2-130Up to 403-750


The S Series Triple-Screw Pump consists of three rotating parts, a male drive spindle (driver screw) and two female secondary spindles (driven screws). As the driver screw starts rotating, the driven screws also rotate. Due to the movement of these screws, a minimal vacuum starts producing at the inlet section. This vacuum causes the fluid to enter through the inlet valve. The fluid is trapped between the gap of the “screws” and rotated as the screws rotate. As pressure increases, the fluid is discharged from the outlet valve and transferred to the desired location.

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