Pressure amplification principle

The principle

In our pressure intensifier, the high pressure is obtained by pushing a fluid in a small diameter cylinder thanks to the force resulting of a low pressure acting on a big area piston.   

The motive fluid is generally oil set in motion by variable flow hydraulic pumps.

The pressure amplification can be single- or dual-acting.

Single acting

Single-acting amplifiers only operate during the outbound travel of the piston.

Through precise control of the plunger movement and the use of a servovalve to manage the pressure of the motive medium, this amplifier technology is used in transient regime type applications where it is necessary to ensure accurate control of the injected volume or a pressure as a function of the time.

  • Filling a UHP enclosure (hydroforming, autofrettage, isostatic press, etc.),
  • High-pressure equipment test bench (injectors, solenoid valves, etc.),
  • Control of hyperbaric chambers

Dual acting

Dual-acting amplifiers operate during both the outbound and return travel of the pistons.

Equipped with valves and associated with UHP accumulators or pressure attenuators, this amplifier technology is used in applications that require constant flow rates in steady state, such as waterjet cutting.