The float and thermostatic trap (or F&T trap, as shown in Figure 4) is widely used in all kinds of steam systems.
Notice that the float and thermostatic trap used at the end-of-main does not require condensate subcooling because it is a mechanical trap.
A major change in steam trap design started with the development of the thermostatic trap
. These traps operate based on the fact that steam is hotter than condensate.
react to changes in steam temperature, and will pass condensate when lower temperatures are reached.
Additionally, in 39 locations, new atmospheric vacuum breakers needed to be installed because existing air handlers either had outdated breakers, thermostatic traps
, or check valves installed backwards.
Prior to purchasing GEM steam traps, Leen Wijngaarden, Senior Engineer at Loders Croklaan carried out a trial of the GEM Venturi Orifice steam trap, which confirmed that it was 50 percent more efficient than new thermostatic traps
used on site.