ExpanTek^® 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 tubing or pipe. Using this unique tool along with a high-pressure power source, such as the ExpanTek^® Model HPS Hydrostatic Pressure System, 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.

Contact Airmo for special tool sizes and configurations.

Product Features

	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

ExpanTek^® Model 37 Series Tube Expansion Tools.pdf

ExpanTek^® Product Line Card.pdf

Applications

The ExpanTek^® Model 37 Series Tool is used in many coil and tube expansion applications.

ExpanTek^® Tube Expansion Tools

ExpanTek^® Model 30 Series Tube Expansion Tools - Pressures up to 10,000 psi (689 bar)
ExpanTek^® Model 35 Series Tube Expansion Tools - Pressures up to 15,000 psi (1,034 bar)
ExpanTek^® Model 280 Series Tube Expansion Tools - Pressures up to 20,000 psi (1,379 bar)

NuQuip^® High-Pressure Accessories

NuQuip^® Automatic Air Bleed Valves - Pressures up to 40,000 psi (2,758 bar)
NuQuip^® Model QD Series Quick Disconnects - Pressures up to 60,000 psi (4,137 bar)

ExpanTek^® Hydrostatic Pressure Systems

ExpanTek^® Model HPS Hydrostatic Pressure Systems - Pressures up to 30,000 psi (2,068 bar)

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