GC Unions

Making Joining Matter

GC unions are available in two material types: stainless steel and Glass Lined Tubing (GLT™) stainless steel.

  • Stainless steel unions come in a variety of tube sizes and configurations for example: straight through, reducing, tees, crosses and bulkheads.
  • GLT unions are inert and mainly used for connecting fused silica tubing of various internal diameters.

All GC unions are supplied with the appropriate nuts, ferrules and/or sealing rings.

Product specifications

Straight through unions and bulkhead unions

Union types

1. Straight through unions
Straight through unions

2. Bulkhead unions
Bulkhead unions

Material characteristics

  • Available in stainless steel or glass lined (GLT) stainless steel.

Connections suitable

  • Connecting tubing of the same diameter.
  • Glass Lined Tubing (GLT) and plastic tubing.

Features, benefits and applications

  • Low dead volume.
  • Non-swaging, easy to remove fittings that will not deform tubing.
  • High temperature operations - ferrules are the temperature limiting component.

Sizes available

  • 1/16" to 1/4".

Reducing unions and reducing bulkhead unions

Union types

3. Reducing unions
Reducing unions

4. Reducing bulkhead unions
Reducing bulkhead unions

Material characteristics

  • Stainless steel.

Connections suitable

  • For connecting tubing of different diameters.
  • Suitable for Glass Lined Tubing (GLT), metal and plastic tubing.

Features, benefits and applications

  • Non-swaging, easy to remove fittings that will not deform tubing.
  • No back ferrule required. Gives greater flexibility with regards to micro-control valves. Suitable for Glass Lined Tubing (GLT), metal and plastic tubing.

Sizes available

  • 1/16" to 1/8".
  • 1/16" to 1/4".

Union tees and union cross

Union types

5. Union tees
Union tees

6. Union cross
Union cross

Material characteristics

  • Stainless steel.

Connections suitable

  • Union tees have the ability to have different size legs for different size tubing.

Features, benefits and applications

 

  • Allows splitting of the flow between two or more outlets.
  • Suitable for Glass Lined Tubing (GLT), metal and plastic tubing.
  • Non-swaging, easy to remove fittings that will not deform tubing.
  • No back ferrule required.
  • The male/female tees can be stacked in order to make a manifold of 1/16" tubing which can be used for drying samples or splitting sample stream to multiple outlets.

 

Sizes available

 

  • Four different tee configurations:
  1. All legs for 1/16".
  2. One leg 1/8" and two legs 1/16".
  3. One leg 1/4" and two legs 1/16".
  4. The union cross is a four port union all set up to connect 1/16" tubing.

Glass lined mini unions

Union types

7. Glass lined mini unions
Glass lined mini

Material characteristics

  • Glass lined (GLT) stainless steel.

Connections suitable

  • Connecting fused silica and capillary tubing.
  • Tubing of different sizes can also be connected. However, mini union ferrules for the tubing that is different than the normal usage need to be purchased separately.

Features, benefits and applications

  • Inert due to glass lining.
  • Smaller in size than standard 1/16" unions, less of a heat sink and do not put extra weight on fused silica tubing connections.
  • Fused silica connections due to the reduced weight and thermal mass.

Sizes available

  • 0.4 mm ID (for use with tubing <0.25 mm ID).
  • 0.5 mm ID (for use with tubing 0.32 mm ID).
  • 0.8 mm ID (for use with tubing 0.45 and 0.53 mm ID).

More

Please refer to the part number list for more items.

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