<p>A fluid controller (71), comprising an operating member (75) for automatic opening/closing vertically moved by the supply and discharge of a compressed fluid into and from a compressed fluid lead-in chamber (90) formed in a casing (73) to move a valve element retainer (5) to an opening position against the energizing force of a compression coil spring (77) and an operation member (74) for manual opening/closing vertically moved by manual operation and when moved downward, directly pressing the valve element retainer (5) downward.</p>
