What is a characteristic of a mechanical steam trap?

A mechanical steam trap is designed to remove condensate and air from a steam system while allowing steam to pass through with minimal loss. One of its key characteristics is that it may incorporate a thermostatic air release mechanism. This feature is essential because it allows the trap to discharge air and non-condensable gases effectively, which is crucial for maintaining system efficiency and preventing air pockets that can impede steam flow.

The presence of a thermostatic air release is important for the trap's operation, as it responds to temperature changes. When temperatures rise, the thermostatic element expands and opens to release trapped air. Conversely, when steam is present, it can close to retain the steam in the system. This mechanism ensures optimal performance and efficiency of the steam system.

Other characteristics of mechanical steam traps include that they do not contain alcohol or any fluids inside the float. They operate based on the balance of hydrostatic pressure and the steam temperature, but this is not their defining feature compared to having a thermostatic air release. While they can sometimes be installed in various orientations, their design often dictates specific installation conditions to ensure proper function.