Switching valve

Abstract

[Problem] To provide a switching valve in which the operation of the slide valve and the stop mechanism are synchronized. [Solution] The switching valve (1A) has: a slide valve portion (5) that switches the communication state between ports by means of a slide shaft (8, 10) housed in a valve hole (7) communicating with a plurality of ports; a first drive portion and a second drive portion (30, 40) that drive the slide shaft by means of guiding fluid and transfer the slide valve portion to a plurality of switching states; and a stop mechanism portion (60) that holds the slide valve portion in a specific switching state. The stop mechanism portion has: an engaging rod (62) that is movably housed in a sliding hole (74); a recess (63) provided on the slide shaft; and a stop drive portion (64) that engages and disengages the engaging rod from the recess. The stop drive unit has a piston (66), a spring component (67) that biases the engagement rod toward the recess, a pressure chamber (61b) that disengages the engagement rod from the recess, and a connecting flow path (68) that connects the guide flow path (44) to the second chamber (61b).

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