A stop valve is a valve in which the separating element moves along the center line of the valve seat. Since this type of stop valve has a fairly short opening or stem tip stroke and a reliable shut-off function, while the change in the opening of the stop seat corresponds to the stroke of the separating element, it is very suitable for flow-related regulation. So it is very suitable for flow-related regulation. Therefore, this type of stop valve is very suitable for shut-off or adjustment and throttling. Next, let's take a look at the selection principles and characteristics of a stainless stop Check valve.