| 摘要 |
PROBLEM TO BE SOLVED: To provide a channel switching valve capable of switching a plurality of channels, simplifying a constitution, reducing an occupying space, and reducing energy.SOLUTION: This channel switching valve includes a valve body 20 provided with a valve chest 21, a valve element 30 for rotating while respectively oppositely contacting its upper-lower end surfaces with an upper side valve seat part 22A and a lower side valve seat part 22B, and an actuator 15 for rotatingly driving the valve element 30. A plurality of upper side inlet-outlet ports 11a-14a and an upper side main port 25a are formed in the upper side valve seat part 22A. Lower side inlet-outlet ports 11b-14b making a pair with the plurality of upper side inlet-outlet ports 11a-14a and a lower side main port 25b making a pair with the upper side main port 25a, are formed in the lower side valve seat part 22B. The valve element 30 is provided with communicating passages 31 and 32 for communicating the mutual respective ports for making a pair vertically. The valve chest 21 is divided into an upper chamber part 21A and a lower chamber part 21B by the valve element 30. |
