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Hydraulic Tube Expansion

Hydraulic Tube Expansion

HydroSwage® Hydraulic Tube Expansion Equipment

Haskel International offers a wide range of equipment designed for hydraulic expansion of heat exchanger tubes into tube sheets through the direct application of high internal hydraulic pressure. This equipment constitutes the HydroSwage product line.

"HydroSwage®" is a trademark that has become synonymous with the process of hydraulic expansion. This demonstrates how Haskel technology stands as the industry benchmark for hydraulic expansion equipment.

Mark V HydroSwage® System

The Mark V HydroSwage® System features an electronically controlled, air driven hydraulic system which includes a high pressure intensifier producing pressures to 50,000 psi (3445 bar).

The control panel allows set up and monitoring of all tooling functions through a digital touch screen and is configured to allow Tube-Locâ„¢ and Swage functions to be performed simultaneously by two operators.

The Mark V is housed in a sturdy metal cabinet with heavy duty industrial caster for portability. The touch screen stores expansion history available for download to Excel through a USB port. In addition, analog connections are provided to accommodate chart recorders and computers (optional equipment) for permanent QC records.

Connected to the intensifier by a 20 ft. (6 m) long high pressure flexible tube (other lengths available) the Mark V mandrel holder gives the operator complete control of the swaging cycle. The operator button initiates the sequence of pre-fill, high pressure swage and dwell. The electronic transducer senses the pressure within the tube and displays it on the control panel. The signal lights (yellow for run, green for completed cycle and red for incomplete cycle) advise the operator of swaging status.


HydroSwage products are designed and manufactured for use in a wide range of markets and applications:

  • Power Generation
  • Nuclear Power Generation
  • Petro-Chemical
  • Pulp and Paper Mills
  • Pharmaceutical
  • Heating and Air Conditioning
  • Sanitary
  • Package and Stationary Boilers
  • Hydro-Forming

Haskel offers more than 30 years of engineering experience in the design and manufacture of hydraulic expansion systems and tooling. Our vision is to provide our customers innovative solutions using hydraulic expansion technology. We constantly explore new processes and develop new products that offer a unique approach to our customers' specific applications and requirements.

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