valve lists a minimum pressure required to remain closed in the unpowered state.thumbnail

Pilot-operated

While there are multiple design variants, the following is a detailed breakdown of a typical pilot-operated solenoid valve. They may use metal seals or rubber seals, and may also have electrical interfaces to allow for easy control.

The diagram to the right shows the design of a basic valve, controlling the flow of water in this example. The top half shows the valve

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