This trap is a temperature operated trap i.e. thermostatic steam trap. It uses the fact that temperature of steam is higher than condensate. When steam enters the trap, its higher temperature causes bimetallic strips to bend and close the valve. Thus no steam goes out of the system.
How do you maintain steam traps?
The general rule for steam trap preventive maintenance is the higher the pressure, the more frequent the test. For example, high-pressure traps with rates greater than 250 psig should be tested daily. However, low-pressure traps with rates below 30 psig can be checked monthly or even annually.
How does a steam trap operation?
Mechanical steam traps operate by gravity. Specifically, the difference between the water and steam causes a stainless steel float ball to rise and sink within the trap, which opens and closes the valve.
What is meant by steam traps explain the operation of thermostatic steam trap?
Thermostatic Steam Traps Thermostatic traps operate by utilizing the difference in temperature between condensate that is close to steam temperature and sub-cooled condensate (or low temperature air).
Where should a steam trap be located?
Locate the steam trap below the lowest condensate discharge point of the equipment. Never install a rise in the pipe ahead of a steam trap. Check valves should be installed after the steam traps in most applications.
What is the main function of a steam trap?
Steam traps are a type of automatic valve that filters out condensate (i.e. condensed steam) and non-condensable gases such as air without letting steam escape. In industry, steam is used regularly for heating or as a driving force for mechanical power.
Why are steam traps necessary?
The steam trap is an essential part of any steam system. It is the important link between good steam and condensate management, retaining steam within the process for maximum utilisation of heat, but releasing condensate and incondensable gases at the appropriate time.
Why are steam traps important?
What type of valve is steam trap?
automatic valve
Steam traps are a type of automatic valve that filters out condensate (i.e. condensed steam) and non-condensable gases such as air without letting steam escape. In industry, steam is used regularly for heating or as a driving force for mechanical power.
How often do you replace your steam trap elements?
The balanced pressure steam trap for example, has an element which is designed for easy replacement. Changing these on a regular basis, maybe once every three years or so, might seem wasteful in time and materials.
What should I look for when buying a steam trap?
Always check with the manufacturer regarding the correct technique for any maintenance work required on steam traps. A reputable manufacturer will always be able to supply appropriate literature, advice, and spare parts. A lot will depend on site conditions.
How do you change a thermostatic trap?
The elements of thermostatic traps can generally be changed by removing a screwed in seat. Replacement is simple and the remade trap will be reliable assuming the maintenance instructions are correctly carried out. If the seat or disc faces of a thermodynamic trap become damaged, the disc can simply be replaced (Figure 11.14.6).
What is a fool proof steam trap testing device?
The unreliability of the above methods has prompted the development of an integrated and fool proof steam trap testing device. This consists of a sensor, fitted inside the steam trap, which is capable of detecting the physical state of the medium at that point by conductivity (Figure 11.14.1).
