Steam Trap

Steam Trap

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Steam Trap Overview

A steam trap is a device used to discharge condensate and non condensable gases while not permitting the escape of live steam. Nearly all steam traps are nothing more than automatic valves. They open, close or modulate automatically.


Mechanical traps
They have a float that rises and falls in relation to condensate level and this usually has a mechanical linkage attached that opens and closes the valve. Mechanical traps operate in direct relationship to condensate levels present in the body of the steam trap. Inverted bucket and float traps are examples of mechanical traps.

Temperature traps
They have a valve that is driven on / off the seat by either expansion / contraction caused by temperature change. They differ from mechanical traps in that their design requires them to hold back some condensate waiting for it to cool sufficiently to allow the valve to open. In most circumstances this is not desirable as condensate needs to be removed as soon as it is formed. Thermostatic traps and bimetallic traps are examples of temperature operated traps.

Thermodynamic (TD) traps
Thermodynamic traps work on the difference in dynamic response to velocity change in flow of compressible and incompressible fluids. As steam enters, static pressure above the disk forces the disk against the valve seat. The static pressure over a large area overcomes the high inlet pressure of the steam. As the steam starts to condense, the pressure against the disk lessens and the trap cycles. This essentially makes a TD trap a "time cycle" device: it will open even if there is only steam present, this can cause premature wear. If non condensable gas is trapped on top of the disc, it can cause the trap to be locked shut.

We offer a broad line of Steam Traps covering Lever Free Floating Ball Type Steam Trap, Free Floating Semi-Ball Type Steam Trap, Free Floating Type Steam Trap, Lifting Free Floating Ball Type Steam Trap, Plated Type Steam Trap, Adjustable Dual-plate Steam Trap, Adjustable Homothermal Type Steam Trap, Basket Type Steam Trap, Diaphragm Box Steam Trap, Heating Motivated Plate Steam Trap and Bellow Sealed Type Steam Traps.Materials Available in Cast Iron, Ductile Iron, Cast Steel, Stainless Steel and Duplex Steel



Pump Run Out Protection
Pump Run Out Protection
2014/09/16 - pm3:58



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