What does a Normally Open Valve do?

A Normally Open Valve is designed to allow water to flow freely through it unless an external force, such as an actuator or a manual operation, closes it. This means that in its default state, the valve remains open, allowing continuous fluid passage. The characteristic of being "normally open" is particularly useful in irrigation systems where you want a steady supply of water unless there is a specific need to stop the flow, such as maintenance or a fault in the system.

In contrast to other options, a Normally Open Valve does not relate to functioning during power outages, nor is it exclusively meant for drainage or pressure control. It plays a crucial role in ensuring that irrigation can continue without interruption unless there’s a determined action to shut it off, maximizing efficiency and water management in irrigation practices.