What is the primary cause of most steam pressure reducing valve failures?

The primary cause of most steam pressure reducing valve failures is dirt and corrosion buildup. Steam systems often operate in environments where impurities in steam, water quality, or particulate matter can introduce contaminants. Over time, these contaminants can accumulate within the valve, impeding its mechanical components and leading to operational failures.

Corrosion can also develop due to the presence of oxygen and other corrosive elements in the steam or water. This corrosion can degrade the materials of the valve, leading to leaks and functional issues. By maintaining clean steam systems and regularly inspecting and servicing pressure reducing valves, one can mitigate the risks associated with dirt and corrosion buildup, ensuring the reliable operation of steam equipment.