Cone valve

A cone control valve comprising a housing having opposed and connected inlet and outlet ports located on a horizontal axis and a vertical axis intersecting the horizontal inlet and outlet ports, said vertical axis has a conical opening, a conical plug having an cylindrical extension and designed to fit into the conical opening of the housing and being capable to block communication between inlet and outlet ports, a stem having one end connected to the conical plug while the opposed end can be motivated to affect vertical movements of the conical plug, allowing selective amounts of fluid to pass from the inlet to the outlet port, said conical opening furthermore has two expansion chambers located perpendicular to the horizontal axis and on opposite sides of the conical plug designed to intercept fluid circulating between inlet and outlet ports and around parts of the circumference of the conical plug in order to add fluid resistance which varies exponentially with the vertical movement of the conical plug, the conical plug has an upper flat terminating portion allowing direct fluid access between inlet and outlet port when at a desired portion of the vertical plug motion, a portion of said stem being enclosed by sealing means being enclosed in said housing to prevent escape of fluid from the housing.