Patent ID: 8132784

Claim:
System for fixing an actuator to a valve, comprising: a valve, the valve comprises: a valve body defining inside a fluid passing duct; a closing member arranged for opening and closing the fluid passing duct; a fixing joint arranged for fixing an actuator to the valve, so as to allow the closing member of the valve to be driven at least by the actuator, wherein at least one of the valve and of the fixing joint comprises a fixing head and the other of the valve and the fixing joint comprises: a collar having a substantially tubular shape and defining, at a free end thereof, a fitting seat arranged for contracting and expanding, and for being fitted on the fixing head so as to be fixed on the fixing head; a blocking element fitted on the collar and arranged for contracting and expanding the fitting seat by moving relative to the collar, so as to fix the collar on the fixing head; the fixing joint comprising a connection shaft that is inserted in the collar, is rotatable about a rotation axis and comprises an upper end configured to engage the actuator and a lower end configured to drive the closing member and wherein the collar provides a plurality of prolongations arranged to tighten the collar on the fixing head when the blocking element moves along the collar.