Patent ID: 8316878
Filing Date: 2012-11-27
Classification: F16K,Y10T

Abstract:
1. A single chamber two-way servo-operated valve, comprising: a valve body; a flow tube disposed within an interior of the valve body, the flow tube including an inlet aperture, an outlet aperture, and an access; a cover to close the access of the flow tube; a port dividing the flow tube into an inlet section and an outlet section; a valving element including a disc for closing said port, the disc of said valving element having a rigid central core which is at least partially covered by a rubber layer adhering to said central core; and a flexible diaphragm connected to the disc to separate the flow tube from an actuating chamber lying between the disc and the cover, said rubber layer extending from an edge of the disc to form the flexible diaphragm, wherein said valving element includes a stem which projects from only one side of the disc, wherein the cover includes a dead-ended hole acting as a guide for the stem, wherein the cover includes a central portion with two actuator holes and a lateral flange for connecting the cover to the valve body, wherein the valve body includes an inlet hole in the inlet section and an outlet hole in the outlet section, and wherein the lateral flange of the cover includes two lateral through holes to be superposed on the inlet hole and the outlet hole to connect the inlet section and the outlet section to the actuating chamber.