STEAM TRAP

THERMODYNAMIC STEAM TRAP

Overview
Thermodynamic traps work on the difference in dynamic response to velocity change in the flow of compressible and in-compressible 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.
Features
• Uniquely designed with maintainable seat.
• Corrosion resistant stainless steel construction.
• Differential hardness value for seat and Disc.
• Oxidation free heat treatment (vacuum) for seat and disc.
• Functional test- 100% on Steam.
Application
It is an internment discharge type of trap, which works on velocity difference.
It is mainly used in main steam line for drain application.
Benefits
• Thermodynamic traps can operate across their entire working range without any adjustment or change of internals.
• They are compact, simple, lightweight and have a large condensate capacity for their size.
• As the disc is the only moving part, maintenance can easily be carried out without removing the trap from the line.
 

BALL FLOAT STEAM TRAP

Overview
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. Ball Float traps operate in direct relationship to condensate levels present in the body of the steam trap.
Features
• Maintainable strainer design
• Sight glass as standard feature
• Functional test- 100% on Steam
Application
They can continuously pass large volumes of condensate and are suitable for a wide range of process applications.
It is commonly used for compressed air lines and can also be used in various gases lines to drain moisture or liquid.
Benefits
• Only one moving part.
• Insensitive to contamination.
• Extremely long working life.
• Extremely low maintenance.
• Proportional control action.
• Independent of pressure and temperature fluctuations.
• Impact-free and silent condensate discharge in exact quantity.
 

THERMOSTATIC STEAM TRAP

Overview
They have a valve that is driven on / off the seat by either expansion / contraction caused by temperature 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.
Features
• Maintainable strainer design
• Thermostatic element designed for wide pressure range.
• Functional test- 100% on Steam
Application
• Thermostatic steam traps are also commonly used as air vents in steam systems.
• These traps used largely on tracing lines or Tank Farms where steam is supplied to maintain Temp / viscosity of the Oil.
Benefits
• Intermittent operation
• Fair energy conservation
• Fair resistance to wear
• Good corrosion resistance
• Excellent operation against back pressure