VERFAHREN ZUR STEUERUNG DES DURCHFLUSSES EINES MEDIUMS DURCH EIN VENTIL UND VENTIL ZUR DURCHFUEHRUNG DES VERFAHRENS

摘要

A control valve of the type wherein a valve member in the form of a piston moves axially within a piston guide cylinder located in a valve chamber. The valve chamber includes an inlet chamber, an outlet chamber, a valve seat area, and a main flow path and a plurality of by-pass ducts running through an inlet collar and terminating at the valve seat area. A by-pass admission duct which includes an entrance section located in a convexly curved portion of the inlet collar feeds the fluid controlled by the valve to the by-pass ducts and this duct which begins at a rotationally symmetrical throat section of the main flow path is generated by the respective boundary lines of the inlet collar and piston guide cylinder, the shortest connecting line between those boundary lines and an extension of the line which generates the valve seat area.