Why do most solenoid valves fail?

Most solenoid valves fail primarily due to scale buildup or corrosion. Solenoid valves operate by controlling the flow of liquid or gas through a pipe, utilizing an electromagnetic coil that opens or closes a valve. Over time, especially in applications involving water, minerals and other particulates can accumulate inside the valve. This buildup can obstruct the valve, preventing it from moving freely, which can lead to operational failure.

Corrosion can occur in a solenoid valve due to the materials used in construction and the nature of the fluid flowing through it. For example, in systems with hard water, minerals can deposit inside the valve, leading to restricted flow and ultimately causing the valve to malfunction. In addition, corrosive substances can wear down the internal components of the valve, leading to leaks or complete failure.

While incorrect installation, faulty wiring, and power surges can also contribute to solenoid valve issues, the significance of scale buildup and corrosion often makes it a leading cause of failure. This operational degradation typically develops over time and can often be traced back to issues with water quality or maintenance practices, making it essential for users to ensure regular maintenance to combat these problems.