Isolation valve including a valve control element and a locking device, which are protected against corrosion and an improved heat transfer, and corresponding method

摘要

A valve device, which comprises:a valve body, which a fluid flow chamber, wherein the valve body an inlet opening for a fluid flow into the fluid flow chamber and an outlet opening for the fluid flow from the fluid flow chamber,a closing member, which in the fluid flow chamber between the inlet opening and the outlet opening is arranged, wherein the closing member according to the rear and the front between (i) an open position, in which the closure member a fluid flow through the inlet opening into the fluid flow chamber and through the outlet opening from the fluid flow chamber, and (ii) a closed position, in which the closure member a fluid flow through the fluid flow chamber of the inlet opening to the outlet opening prevents,an actuator device by means of which the closure member according to the rear and the front between the open position and the closed position anda corrosion-resistant shielding enlargement, which extends from the closing member and, together with the closing member is moved to a position in which the actuator device from the fluid flow chamber is isolated, if..