WEH® Connector TW230 for bores and internal tube diameters, clamping lever actuation, vacuum up to max. 70 bar - Product family

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The Quick Connector WEH® TW230 for bores and tubes of copper, seel and aluminium is ideal for pressure and vacuum testing, as well as for underwater, pressure decay and helium tests. The Connector seals reliably inside tube and bore diameters from 9.5 to 22.2 mm - establishing safe & pressure-tight connections in just seconds.

The radial sealing is very reliable and brigdes tube tolerances of up to ± 0.25 mm (required roundness of internal tube diameter max. 0.25 mm). There is no seal adjustment required.

Connection to the inner tube diameter is established by simple actuation of the manual clamping lever. Thanks to the WEH® Jaw locking mechanism the connector is securely located - expensive clamping devices are eliminated. The timesaving handling shortens connection times and simplifies workflows. Thus increasing productivity. Thanks to the WEH® Jaw locking mechanism wear and distortion of the test piece are minimised as surface pressure is very low.

The quick connector WEH® TW230 is equipped with a NBR front seal. Other sealing materials are available on request. It is the customer‘s responsibility to clarify the media compatibility.

The quick coupling is also used for leak testing fo heat exchangers, air conditioners, tubing and heating systems in the refrigeration and air conditioning industry, as well as for testing radiators and water connections for engine testing in the automotive industry.

Nominal bore (DN)
2 to 5 mm, acc. to design
Max. allowable operating pressure PS
Vacuum up to 70 bar (1,015 psi)
Temperature range
+5 °C up to +80 °C
Media inlet B1
G1/8" female thread
Max. allowable surface finish of test piece
Rz8 μm
Max. allowable material hardness of test piece
28 HRC
Leak rate
1 x 10-3 mbar x l/s
Manual actuation via clamping lever
Clamping jaws: Corrosion-resistant stainless steel, hardened
Housing: Anodized aluminium
Sealing material
Front seal of NBR
Marketing Features
  • Connection in seconds
  • For connection into straight tubes and bores
  • High-grade materials
  • No hand tightening required
  • No seal adjustment required
  • WEH® Jaw Locking Mechanism
  • Wide range of tube tolerances up to ± 0.25 mm

Quick connect / disconnect TW230 for sealing in straight tubes and bores. Sealing in the internal diameter Ø 9.5 mm (3/8“) up to 22.2 mm (7/8“). Typical applications are pressure testing / vacuum testing / pressure decay testing / helium testing on components for HVAC-R industry / manufacturing industry / automotive industry:

  • Heat exchangers
  • Air conditioners
  • Heating systems
  • Pressure vessels
  • Valves
  • Transducers
  • Compressors
  • Condensers
  • Evaporation coils
  • Component and tubing systems
  • Cooling system for automotive industry
  • Water nozzles for engine testing
CAD Files
Data sheets
Data sheet EN 337 KB
Data sheet DE 336 KB
Operating instructions
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