Check valve with movable closing component and method of stopping reverse flow of fluid by means of such valve

摘要

In the valve according to this invention the moving valve body in open position separates, in principle in a tight manner, the reduced pressure area (7) from the deflected area (4) upper part. The method according to this invention consists in a fact that the, tight in principle, closing of the passage between the deflected area (4) upper part and the reduced pressure area (7) is maintained due to a pressure difference existing between the points in front of and behind the moving valve body, and during the reverse liquid flow an additional water hammer energy is used, resulting from the impact of part of the reverse liquid flow against the closed, in principle in a tight manner, reduced pressure area (7).