The number of rotations required for opening or closing varies depending on the type of valve. For this reason, the HSV-R valve interlocks are equipped with a count-release mechanism that
adapts the locking action to the number of rotations required for corresponding final position. In this way, any valve position can be set as the locked open or closed position.
The valve interlock assembly includes a replacement hand wheel which corresponds to the size of the original hand wheel. The valve interlock can be supplied with either one or two operating keys depending on the type of system control required.