On Pelton governors, the gate limit is provided by a separate gate limit valve. When the gate limit setting is above the gate position, the gate limit valve allows unobstructed flow between the pilot valve and the main valve. When the gate position matches the gate limit setting, the gate limit valves blocks all oil flow from the pilot valve. If the gate limit is moved below the gate position, the gate limit valve over-rides the pilot valve and routes oil to close the gates. With any governor, raising the gate limit setting will not have any effect on the gate position unless.
