RETAINING DEVICE FOR SEALING GASKET IN PRESSURE REGULATING VALVE

摘要

Disclosed is a valve disk for a pressure regulating valve having a retaining device to keep a sealing gasket from becoming displaced. The retaining device of the valve disk increases the friction between the sealing gasket and a sealing gasket groove of the valve disk or secures the sealing gasket in place using an annular sleeve around a valve stem, thereby preventing the sealing gasket on the valve disk from tearing out and falling off when the pressure regulating valve is experiencing a high differential pressure or a high current velocity. Accordingly, the retaining device maintains the sealing of the pressure regulating valve, thereby increasing the work life of the pressure regulating valve.

主权项

1. A valve disc for a pressure regulating valve comprising:
a sealing gasket groove in the valve disk, the sealing gasket groove having inner and outer sides; a sealing gasket secured in the sealing gasket groove by a retaining device, wherein the retaining device includes at least one of: a convex retaining groove arranged on either the inner or outer side of the annular groove; a concave retaining strip arranged on either the inner or outer side of the annular groove.