| 摘要 |
A flow-control valve having a valve member operated by a rotatable handle, the handle being selectively lockable to an extending portion of the valve casing at either the open or closed position of the valve member, and being selectively removable from the valve casing. The extending portion of the valve casing is a U-shaped locking post having extending legs with aligned openings therein, and the valve handle includes a locking plate portion having two locking projections each formed with an opening therein and an intermediate removal recess, the valve handle being rotatable between a first valve open position at which one of the locking projections is within the U-shaped locking post legs with the opening therein aligned with the locking post leg openings, a valve closed position at which the other locking projection is within the locking post legs with similarly aligned openings, and an intermediate removal position at which the locking plate portion is clear of the locking post to permit removal of the locking handle. Preferably, the locking plate portion of the valve handle also includes a stop disposed adjacent each locking projection for abutting the locking post at the valve open and valve closed positions of the valve handle, respectively, for accurately positioning the valve handle with respect to the locking post.
|
