In regards to solenoid valves, what is a sign of corrosion or scale buildup?

Intermittent valve closure is often a sign of corrosion or scale buildup in solenoid valves. When minerals or corrosion deposits accumulate inside the valve, they can obstruct the full movement of the valve mechanism, leading to erratic opening and closing. This unreliable operation can manifest as the valve either not opening completely or closing unexpectedly, which can disrupt the intended function of the equipment.

While other signs like increased noise, frequent repairs, or float valve failure can indicate issues in a valve or system, they do not specifically point to the effects caused by corrosion or scale. Increased noise might be due to the mechanical components working harder against blockages but does not directly indicate buildup. Frequent repairs can stem from various issues that do not necessarily relate to corrosion or scale alone. Float valve failure may arise from different causes and does not provide direct evidence of solenoid valve degradation. Therefore, the specific behavior of intermittent closure aligns well with the consequences of corrosion or scaling within the solenoid valve itself.