What is reverse acting solenoid valve?

A reverse acting solenoid valve is a type of valve that operates in the opposite manner of a standard solenoid valve. In this configuration, when electrical current is applied to the solenoid, it causes the valve to close instead of open, and vice versa when the current is removed. This design is often used in applications requiring fail-safe operations, where the valve should default to a closed position in the absence of power. Reverse acting solenoid valves are commonly found in systems such as HVAC, fluid control, and industrial automation.