A double pilot-operated check valve uses how many pilot signals to control the main valve?

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Multiple Choice

A double pilot-operated check valve uses how many pilot signals to control the main valve?

Explanation:
A double pilot-operated check valve uses two independent pilot signals to control the main valve. The two pilot circuits must be energized to move the main valve off its seat, which provides robust, reliable operation especially under high back pressures and transient conditions. This dual-pilot arrangement allows controlled opening from two separate sources or directions, reducing the chance of accidental opening and improving stability. So the correct concept is that two pilot signals control the main valve.

A double pilot-operated check valve uses two independent pilot signals to control the main valve. The two pilot circuits must be energized to move the main valve off its seat, which provides robust, reliable operation especially under high back pressures and transient conditions. This dual-pilot arrangement allows controlled opening from two separate sources or directions, reducing the chance of accidental opening and improving stability. So the correct concept is that two pilot signals control the main valve.

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