Two of the most common causes of steam trap failure are over sizing and dirt within the system. Over-sizing can cause traps to overwork while dirt buildup can cause plugging or prevent a valve from closing.
To help you better assess steam trap failure, here are some general indications to look out for:
If you suspect your steam traps might be failing, you should test them. You can complete this by:
If you are conducting steam trap maintenance, it is important to remember that not all maintenance procedures will be the same. It will often depend on the type of trap and its application.
Source: MaintainX (Community Member)