Hand wheel operated stop valve - has locking mechanism acting directly between hand-wheel and valve head

摘要

The stop valve has an upright non-rotating spindle actuated by a handwheel. This has a locking mechanism with a bolt sliding horizontally into the path of the spindle. The locking mechanism acts directly between the handwheel and the valve head, while the bolt acts as a feeler against the spindle. The wheel and the head can be locked together by a bolt moving vertically up and down dependent on the movement of the first bolt. They are moved by the bolt against spring action, typically via a cam.