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GEM Traps have a revolutionary venturi orifice design,

which enables them to perform the job of a steam trap

without the need for moving parts. This means that GEM

Traps will not wear out and fail.

Like all orifice traps, the GEM Steam Traps used in the

GEM Condensate Return System work by using the

difference in density between steam and condensate.

Condensate is 1,000 times denser than steam and so

passes through an orifice very much slower than steam.

Steam, without condensate present, will typically pass

through an orifice at velocities approaching Mach 1! So

slow-moving condensate squeezes out low density steam

as it approaches the orifice. The high density, slow moving

condensate is then preferentially discharged through the

orifice, trapping the low density steam behind it.

This principle has been used since the 1960s, when the US

Navy converted its fleet to orifice plate with fixed discharge

capacities. However industrial systems have varying loads,

so the GEM trap was developed in 1995 with a 'Venturi' to

regulate condensate capacity over the full range of

operating conditions.

Please click on the links to the right for more information or request a quote for GEM steam traps today!