| 摘要 |
PURPOSE:To reduce the working steps by an operator to one half thereof, by carrying out either one of the change-over operations of clamping and unclamping with the use of lever operation while the other change-over operation is automatically made by pushing operation under external force. CONSTITUTION:A sool 15 which switchingly connects a load port 12 with a pump port 14 or a tank port 13 in association with the operation of a change- over control lever 17, is slidably disposed in the inside of the valve body 10, having one end projected outwardly and abutting against a pushed rod 24. Further, one of the change-over operations of clamping and unclamping is carried out by one lever operation while the other change-over operation is automatically made by moving the pusher rod 24 by means of a cylinder, a cam, etc., thereby the working steps by an operator may be reduced to one-half thereof. |
