Model 37 Series Tube Expansion Tools

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Model 37 Series
Tube Expansion Tools

Pressures Up to 20,000 psi (1,379 bar)

The patented ExpanTek® Model 37 Series Tube Expansion Tool is a precision-machined tool providing versatility for use in hydro-expansion applications. The tool is designed for high-pressure expansion of tubes. Using this unique tool along with a high-pressure power source, such as the ExpanTek® Model HPS Hydraulic Power Supply, will rapidly expand tubing for boiler coils, refrigeration coils, and tubular assemblies.

The Model 37 Series Tool is a snap-on coupling suitable for hydro-expansion of tubes with standard OD tolerances and maximum working pressure up to 20,000 psi (1,379 bar).

To hydro-expand a tube, attach the Model 37 Series Tool with optional NuQuip® Automatic Air Bleed Valves to one end of the tube. Adapt the second Model 37 Series Tool to a pressure service line and slip it over the remaining end. Press both tools firmly against the internal stop. When the service line is pressurized to 50 psi (3.45 bar), the collets are activated for a positive grip. Continue to pressurize the tube until expansion pressure is reached. Use caution not to exceed the maximum pressure rating of the tool. After the tube is expanded and the service line pressure drops to 0 psi/bar, the collets automatically release; allowing quick removal of the tools from the work piece.

The Model 37 Series Tool can handle standard and metric tube and fitting sizes from 0.31in. to 1.13 in. OD (7.9 mm to 28.6 mm OD) in diameter.

 
Specifications
Description
  Maximum Pressure: Working pressures up to 20,000 psi
(1,379 bar)
  Tube OD Range: 0.31 in. to 1.13 in. OD
(7.9 mm to 28.6 mm OD)
  Temperature: 32° F to 120° F (0° C to 49° C)
  Services: Water, oil, and other liquids on request
  Collet Grip: On tube OD
  Automatic Collet Actuation: Fast tool removal
  Special Collet Locking Design Principle: Accommodates shorter length tubes
  Predetermined Internal Tube Stop: Requires no measuring
  Compact Balanced Design: Reduces operator fatigue
  Use with NuQuip®
Automatic Air Bleed Valves:
Eliminates operator attendance
during fill cycle
  Construction: Precision-machined, heat-treated
stainless steel
  Custom Options: Custom options considered

Download Product Sheets

ExpanTek® Model 37 Series Tube Expansion Tools.pdf

ExpanTek® Product Line Card.pdf