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Brand: Dowty

Dowty Double Tandem Pump

The Dowty Double Tandem Pump is a high-performance hydraulic gear pump designed to deliver reliable power for demanding industrial and mobile applications. Built with robust materials and precision-engineered components, it enables two independent hydraulic circuits through a compact tandem configuration. Known for its durability, efficiency, and consistent flow output, this series is ideal for applications requiring simultaneous operation of multiple functions with optimal performance and long service life.

  • Check Mark Operating Pressure : High Performance Range
  • Check Mark Application : Industrial & Mobile Systems

About this item

The Dowty Double Tandem Pump (often referred to as a Dowty Dual Tandem Pump) is a high-precision hydraulic gear pump that integrates two independent pumping sections into a single housing, driven by a common shaft. Developed primarily in technical collaboration with Dynamatic Technologies, these pumps are designed to provide multiple hydraulic flows or different pressures from a single power source, saving space and reducing system complexity.

 

Working Principle

The pump operates on the positive displacement principle. As the common drive shaft rotates, two separate sets of meshing gears create vacuums at their respective inlets to draw in fluid. This fluid is trapped between the gear teeth and the casing, then forced out through separate discharge ports. This “two-in-one” design allows one engine or motor to power two distinct functions, such as a tractor’s primary lift and an auxiliary tool, simultaneously.

 

Possible Multiple Pump Group Combinations

  • 0P 0P
  • 0P 0P 0P
  • 0P 0P 0P 0P
  • 1P 0P
  • 1P 1P
  • 1P 1P 1P
  • 1P 1P 1P 1P
  • 2P 0P
  • 2P 1P
  • 2P 2P
  • 2P 1P 1P
  • 2P 2P 1P
  • 2P 2P 2P
  • 3P 1P
  • 3P 2P
  • 3P 3P
  • 3P 2P 2P
  • 3P 3P 2P
  • 3P 3P 3
KEY SPECIFICATIONS
Type Double Tandem Hydraulic Pump
Pressure Rating 210–250 bar (peak up to 280 bar / 3000–3600 PSI)
Displacement Range 0.8 cc/rev to 151 cc/rev (varies by frame size)
Operating Speed Up to 3000–4000 RPM
Flow Rates 2 LPM to 225 LPM (up to 3000–4000 RPM)
Bearing Type Bimetal bearings for durability
Construction Aluminium alloy / Cast iron body with hardened steel gears
Gear Material Hardened alloy steel
Configuration Shared inlet with dual independent outlet ports
PERFORMANCE PARAMETERS
Volumetric Efficiency Typically 90%–95%, ensuring minimal internal leakage and consistent output
Mechanical Efficiency Around 85%–92%, providing effective power transmission with low losses
Overall Efficiency Up to 80%–88%, combining volumetric and mechanical performance

 

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