Closable rotary grip for upper part of valve

摘要

The rotary grip has a spindle driver (4) fixed on a valve spindle (7) which in a certain position is coupled in positive engagement with the rotary grip (1). The rotary grip (1) has an inner toothed rim (14) and the spindle driver (4) has an outer toothed rim (17) at the same level. The grip also has at the inner end a rigidly connected pinion-type coupling part (15) with teeth (16), which matches the inner and outer toothed rims (14,17) of the rotary grip and the spindle driver. The closure cylinder (6) locates in an intermediate component part (9) which is rotatably located around the spindle driver (4) in a position of a closure cylinder (6) preventing the operation of the valve.