The TubePro System is a safe and reliable method of hydraulically pre-setting tubes into tubesheets prior to full hydraulic or mechanical expansion.
The TubePro does not create a hydraulically tight joint. The TubePro All Metal Expanding Segment tooling is designed to set tubes in place before welding, allowing welding-generated gases to escape.
The TubePro System is easy to use, and the unique design requires no physical force by the operator. The result is a tool which requires minimal training to operate effectively and safely.
- Tubes can be consistently set (recessed, flush or protruding)
- Approximately five seconds per tube expansion time
- Zero operator strain: all reaction force is absorbed by the tool
- No wall thinning
- Easily accommodates any standard tube diameter from 3/8" to 3"
The TubePro system consists of: an air driven power supply unit, a pull cylinder unit with umbilical hose assembly, and the mandrel assembly for the tube size being expanded.
The power supply is a self-contained, air operated, closed-loop hydraulic system capable of generating regulated pressures up to 3,000 psi. This pressure is produced by a high-capacity pump unit housed in a portable, lightweight steel frame.
Gun (Pull Cylinder)
The gun (pull cylinder) consists of an aluminum, cylindrical high-pressure body and associated high-pressure hose. It is hydraulically driven, with a single acting piston and air return mechanism. The gun is controlled by a recessed button located on the gun handle. The drawbar assembly (see next paragraph), is inserted into the piston assembly.
Drawbar (Mandrel) Assembly
The drawbar/anvil expansion assembly sets the tube protrusion, centers and locks the tube in the hole. The expansion assembly is made up of a series of cam actuated segments, spacers and polyurethane expander rings. These act together under load to expand the tubes in a full 360 degrees of interference fit with the tubesheet. This locks the tubes in place prior to the final expansion using either hydraulic expansion equipment (HydroPro System) or mechanical expansion equipment.
Drawbar Assemblies are available in a variety of configurations to accommodate variable width expansion zones from tubesheet to tubesheet. Tube position (protrusion, flush, recessed) is determined by the configuration of the reaction collar.
- The trigger on the gun is pressed, actuating the power supply
- The piston retracts, expanding the drawbar assembly inside the tube and tubesheet
- After the desired degree of expansion is achieved (as controlled by the regulated pressure of the power supply), expansion ceases
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