What does a steam trap mean, and why is it used in the steam system?
Steam traps are critical parts of a steam system that remove condensate and non-condensable gases while preventing live steam from escaping. They enable proper system operation by preventing direct contact between condensed steam (condensate) and the steam traps.
Steam traps play an invaluable role in maintaining the proper functioning of heat exchangers, radiators and other steam-powered equipment by eliminating condensate and non-condensable gases that enter their respective devices. By eliminating condensate accumulation and non-condensable gas inflow, steam traps protect against damage while improving energy efficiency. Their primary function is energy saving, low-cost maintenance and prolonging the life of parts in a balanced steam system.
How does a steam trap effectively function to eliminate condensation from the system of steam?
A steam trap is designed to operate professionally but simply to remove condensate from a steam system. As steam moves throughout its journey to heat various processes or equipment, some heat energy is lost as water molecules transform to form condensation; the mechanism behind its operation relies on density differences between steam and water molecules, with denser condensate collecting at the bottom of pipes or equipment as it becomes denser than steam itself.
Based on this density difference, a steam trap acts as a valve opening and closing as condensate accumulates. After condensate has been removed from the system, its valve opens to allow water to escape but remains closed to keep live steam in. When condensate is released from its containment, it shuts its valve, and steam remains in its home system for further use to keep efficiency high and avoid harm due to water accumulation. Steam traps are critical components in the operation and durability of steam systems because of their ability to control condensate.
Maximum Codensate Load |
Equipment Outlet Piping Size |
Less than 400 lb/hr |
1/2" |
400 - 1100 lb/hr |
3/4" |
.05 - 1 t/h |
1" |
1 - 2 t/h |
1-1/4" |
2 - 3 t/h |
1-1/2" |
3 - 5 t/h |
2" |
Over 5 t/h |
2-1/2" - 4" |
Available in single/three-port design |
Provided with an optional blowdown valve |
Available in forged steel/Stainless Steel body with Stainless Steel hardened disc |
Easy to clean with built-in Stainless Steel ‘Y’ strainer |
Suitable for steam header drain application |
Application & uses: Drip applications Process applications Tracing applications Energy Engineering Control Flow Steam Piping Systems Boiler & Condensate. |
Maximum Condensate Load | Equipment Discharge Piping Size |
Less than 200 kg/h | 15 mm |
200 – 500 kg/h | 20 mm |
0.5 – 1 MT/h | 25 mm |
1 – 2 MT/h | 32 mm |
2 – 3 MT/h | 40 mm |
3 – 5 MT/h | 50 mm |
Over 5 MT/h | 65 – 100 mm |
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