Valve Locking and the Reasons Behind It
A valve lock is a high-capacity, reliable, fully mechanical combination lock that operates without electronics. It works in a unique way, similar to dialing an old-fashioned telephone. The dial is first rotated clockwise to return to a specific number, then reset to the starting point before entering the combination. To unlock, the last entered code must be repeated, followed by turning the dial counterclockwise from the starting position. During unlocking, an internal reset occurs. Once the dial is returned to the starting position, the correct combination must be re-entered to unlock the device. If the code is entered incorrectly, the dial can still be turned counterclockwise (a “false unlocking” action), which triggers an internal reset, allowing the user to re-enter the correct password. Locking Principle of the Valve When the valve is locked, the mechanism works as follows: There is a locking handle located above the damper on the right side. A long elas...