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WEH® Connector TW231 for straight tubes with expanded tube ends, tube ID, clamping lever actuation, vacuum up to max. 1,015 psi - Series

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  • Sealing internal diameters of flared tubes
  • Pressure- & leak-tight connection independent from surface finish of tube end profile
  • Wide range of tube tolerances up to ± 0.25 mm
  • Self-retaining up to max. 1,015 psi (70 bar)
  • Connection in seconds - Just PUSH to connect
Video
  • WEH® TW231 | Easy-to-use test tool for expanded copper tube ends
    WEH® TW231 | Easy-to-use test tool for expanded copper tube ends
    The TW231 reliably seals copper, aluminium or steel tubes with expanded tube end profiles, i.e. swaged, flared or beads. Simply push the connector into the tube and turn the clamping lever through 90°. The WEH Clamping Jaws provide maximum grip from the inside, sealing leak-tight directly behind the expanded tube end profile independent from the surface finish of the tube.
Description
WEH® Connector TW231 for straight tubes with expanded tube ends, tube ID, clamping lever actuation, vacuum up to max. 1,015 psi - Series
The WEH® TW231 Quick Connector reliably seals straight tubes with expanded end profiles (tube ID).

The shaft extension enables sealing of internal tube diameters right behind the expanded tube end (max. length of tube expansion 29.5 mm). Thus tube tolerances of up to ± 0.25 mm can be compensated for.

Your benefit:
As the WEH® TW231 seals inside the tube, behind the expanded end profile, a pressure- & leak-tight connection is ensured even if the surface finish of the expanded tube end is e.g. unround or irregular.

The clamping lever enables fast & easy connection to straight tubes.

Expensive mountings are eliminated as the connector is self-retaining in the straight tube up to an operating pressure of max. 1,015 psi.
Features
  • Sealing internal diameters of flared tubes
  • Pressure- & leak-tight connection independent from surface finish of tube end profile
  • Wide range of tube tolerances up to ± 0.25 mm
  • Self-retaining up to max. 1,015 psi (70 bar)
  • Connection in seconds - Just PUSH to connect
  • No tapes, no thread sealants, no hand tightening required
  • No seal adjustment required
  • Unique WEH® Jaw Locking Mechanism
  • High-grade materials
Technical Data
Operating pressure PS Vacuum up to max. 1,015 psi (70 bar)
Temperature range +41 °F up to +176 °F
Media inlet G1/8" female thread
Surface finish test piece Roughness ≤ Rz8 μm
Material hardness test piece Max. hardness 28 HRC
Leak rate 1 x 10-3 mbar x l/s
Actuation Manual actuation via clamping lever
Material Clamping jaws: Corrosion-resistant stainless steel, hardened
Housing: Anodized aluminium
Sealing material Front seal of NBR
Registration PED 2014/68/EU
Application
The TW231 reliably seals straight tubes with expanded tube ends,
internal tube Ø ranging from Ø 9.5 mm to 22.2 mm.


It is the perfect tool for pressure testing / vacuum testing / pressure decay testing / helium testing of components like copper tubes in industrial applications of the refrigeration / air conditioning industry (HVAC-R) / manufacturing industry / automotive industry:

  • Heat exchangers
  • Air conditioning systems
  • Heating systems
  • Pressure vessels
  • Valves
  • Transducers
  • Compressors
  • Evaporators
  • Single aggregates
  • Tube assemblies
  • Vehicle radiators
  • Water nozzles for engine testing
Downloads
Document type Format Size Download
Datasheet PDF 271 KB
Press release PDF 517 KB
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Fast test connections for expanded tube ends - WEH® TW231

The clamping lever actuated quick coupling TW231 improve in-process leak testing, high pressure testing, run testing and function testing of straight tubes with expanded tube ends. They offer the fastest way to connect and disconnect thanks to the WEH® Jaw Locking Mechanism and the easy to operate clamping lever. The sealing design seals reliably and provides an instant connection form vacuum up to max. 70 bar (1,015 psi) and sealing the interior / inside diameter of flared tubes.

Just push to connect - No need for hand-tightening, no tapes, no thread sealants. The TW231 quick release coupling is the ideal tool for internal sealing to copper, steel and aluminium tubes and mainly used for testing automotive and refrigeration air conditioning components / HVACR-systems for example heat exchangers, pressure vessels, gauges, valves, transmitters, engines, pumps, tanks, radiators, etc. - they are tested faster than ever before.

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