LOCK DEVICE FOR FLOW PASSAGE OPENING/CLOSING HANDLE OF FLUID CONTROLLER

摘要

A stopper support member 12 has a rectangular plate 15 provided with a circular through hole 16 for a cylinder 7 of a fluid controller body 2 to be fittingly inserted therethrough, a downward projection 17 provided at lengthwise one end of the rectangular plate 15 and held in contact with one side wall of a rectangular parallelepipedal portion 4 of the controller body 2 , and an extension 15 a extending outward from the plate 15 beyond the parallelepipedal portion 4 . A stopper 13 in the form of a vertical plate is upwardly or downwardly movably inserted through a hole 18 formed in the extension 15 a of the support member 12 . The stopper 13 has a contact portion 19 movable into contact with the knob 3 a of the handle 3 from outside widthwise of the knob when the stopper is in a locking position and a lock attaching portion 20 positioned above the support member 12 when the stopper is in the locking position.