Coil-spring-return actuators, made by Posi-Seal, have recently been selected for suction lines of hydrocarbon pumps. They can be thermally-activated with fusible links which melt in case of fire. They are listed in the FM Approved Equipment Handbook.
Once tripped by either the links or by a remote electric or pneumatic signal, the valve and actuator must be opened manually with the handwheel. Melted links must of course be replaced.
A report entitled, Thermally-Activated Fire-Safe Emergency Block Valve, is listed in the References.