| 摘要 |
<p>A handle assembly for operating a valve of the type having a valve body and a pivotally mounted actuating spindle (22) extending from the valve body has a mounting means (12) to secure the assembly to the spindle (22), a handle portion (14) connected to the mounting means and a pivotally mounted locking member (28). The locking member is pivotable, either by camming surfaces on the handle portion and the locking member or by a key, between a first locked position in which it engages with a portion of the valve body, and a second, unlocked position in which it is free from the valve body and enables the valve spindle to be rotated by the handle portion. The locking member (28) is provided with a number of apertures which can be aligned with corresponding apertures in the mounting means (12) and the handle portion (14) when the locking member is in the locked position. The apertures are shaped to receive tamper-sensitive tape or wire or the shackle of a padlock, to indicate or prevent unauthorised use of the valve. <IMAGE></p> |
