Valve

摘要

A valve has a hand wheel which is coupled to a valve stem. The valve stem bears a wiper part and is rotatable in a hollow valve body. Means are provided for limiting the angular adjustability of the valve stem and of the wiper part arranged on it so that when the hand wheel is rotated beyond a certain angle, the wiper part can be brought into or out of alignment with one or more outlet openings of the valve body in order in this way to close or open the valve.