WEH® Connector TW57 for filling gas cylinders with male thread - Series

Zoom +

More about this Item
  • Improving cylinder filling efficiency with WEH® CGA Gas Connectors
    Improving cylinder filling efficiency with WEH® CGA Gas Connectors
    Just push WEH gas connector onto / into your CGA gas cylinder thread. No wrench tightening or thread sealants needed. WEH gas connectors are the best choice for improving cylinder filling efficiency by reducing operating times. The types TW54 and TW57 connect directly to CGA 580 / CGA 540 cylinder valve thread. A large variety of actuation loops and levers is available. WEH offers a complete product range for a large variety of gases and gas mixures, e.g. inert gases, oxygen, nitrogen, propane, acetylene, CO2, medical gases etc.  WEH® Connection solutions for gaseous applications connect directly to the cylinder valve thread and provide a pressure-tight connection in seconds. WEH® Filling Connectors are available for valve configurations having internal or external threads (with or without a residual pressure valve) or PIN-Index connections. Improve your productivity using the unique WEH® Connector for gas filling applications.
WEH® Connector TW57 for filling gas cylinders with male thread - Series The WEH® TW57 filling connector is the ideal tool for filling gas cylinders with male threads. It is designed for a nominal pressure of 3,600 psi (200 bar) or 5,440 psi (300 bar) and available for residual and non-residual pressure valves. There is a huge choice of actuation systems for the different valves and protection caps, including loop, lever or wire rope.

The highly innovative WEH® jaw locking mechanism establishes a secure and pressure-tight connection in seconds.The expandable thread segments clamp together firmly on the thread of the cylinder valve, pressure sealing the valve at the same time.

Simply place the CGA 540 connector onto the gas cylinder and close the loop around it. The pressure-tight connection has now been established – with no need for laborious screwing and unscrewing. This simple, time-saving one-handed operation simplifies the connecting procedure and makes fuelling times shorter.

For increased safety for the operator, the connector is fitted with an integrated safety peg. The gas pressure activates the safety peg automatically, preventing the valve from being disconnected accidentally while under pressure.

The gas cylinder connection is also ideal for pallet-filling too, ensuring increased efficiency and further increases in productivity.

The quick connector is available for gas cylinder valves conforming to DIN, BS, NF, CGA, etc.
Connectors for oxygen applications are oxygen cleaned, and are free of oils and greases.
Technical Data
Nominal pressure PN 3,000 psi (200 bar)
4,350 psi (300 bar)
Max. allowable operating pressure PS 3,600 psi (250 bar)
5,440 psi (375 bar)
Test pressure PT 5,440 psi (375 bar)
8,195 psi (565 bar)
Temperature range +41 °F up to +176 °F
+41 °F up to +140 °F (O₂)
Medium Oxygen, nitrogen, CO₂, air, inert gases, medical gases
Actuation Manual actuation via bail handle (handle depending on cylinder valve type)
Design With or without RPV pin
Material Corrosion resistant stainless steel and brass
Sealing material Acc. to gas type
Registration Adiabatic ignition test available
  • For gas cylinders with external thread
  • Version for residual pressure valves or non-residual pressure valves available
  • Connection in seconds - Just PUSH to connect
  • No tapes, no thread sealants, no hand tightening required
  • Easy to connect
  • Suitable for right or left handed operation
  • Suitable for pallet filling
  • Unique WEH® Jaw Locking Mechanism
  • Compact design
  • High-grade materials
Quick Connector for filling of gas cylinders with male thread (with or without a residual pressure valve).


Document type Download
The TW57 Series for filling gas cylinders with male thread is available in different standard versions and sizes:

  • For residual pressure valves or non-residual pressure valves
  • For gas cylinders 3,000 psi or 3,600 psi

Other connections and sizes according to your corresponding national standard on request.
A large variety of actuations is available, i.e. bail handles, levers or wire rope.