GEM technical data


The GEM steam trap product range covers all standard fitting types, steam trap sizes and process types.  Our trap’s unique patented design features ensure we have a perfect solution for your steam trap population.

Our experienced staff will specify the correct trap for each location on your site, however take a look here for our trap datasheets.

Opal GEM Venturi steam trap
Opal GEM Trap
​Opal 15-20 Imperial | Metric 
​Flanged Opal 15-20 Imperial | Metric
Opal 25 Imperial | Metric
​                     Flanged Opal 25 Imperial | Metric

Opal GEM Venturi steam trap
Emerald GEM Trap
Connection type: BSP/NPT Threaded, socket weld or flanged
Applications: Line Drainage trapping
​Imperial | Metric

Sapphire GEM Venturi steam trap
Sapphire GEM Trap
Connection type: BSP/NPT Threaded
Applications: Process and Line Drainage trapping
Imperial | Metric

Ruby GEM Venturi steam trap
Ruby GEM Trap
Connection type: Flanged
Applications: Process trapping
Imperial | Metric 

Ruby Filter GEM Venturi steam trap
Ruby Filter GEM Trap
Connection type: Flanged
Applications: Line Drainage trapping
Imperial | Metric 

Emerald GEM Venturi steam trap
Emerald GEM Trap
Connection type: Quick Fit Adapter
Applications: Line Drainage trapping 
Imperial | Metric ​

Topaz GEM Venturi steam trap
Topaz GEM Trap
Connection type: ‘Dockweiler’ and ‘Triclover’ fittings
Applications: Hygienic steam trapping
Imperial | Metric 

Quartz GEM Venturi steam trap
Quartz GEM Trap
Connection type: BSP/NPT Threaded
Applications: Generic low duty steam trapping
Imperial | Metric

Other Datasheets and Guides:

Check out some success stories

See what GEM steam traps have done for our customers. Take a look at our case studies. 
See sector-specific applications

Take a look at how our venturi orifice designed GEM steam traps have been applied in your sector.
Learn more about GEM steam traps

Read our brochures and FAQ, review our technical data, or contact us for more information.