Patent ID: 6056011
Filing Date: 2000-05-02
Classification: F16L,Y10T

Abstract:
Pipe fitting comprising two fitting parts connectable with respective pipes provided with respective ball valves one of which with concavity, a coupling device for the two fitting parts and functional interconnection means such as to prevent the closing of the valve without concavity before the closing of the valve with concavity and to prevent the release of the coupling device before the closing of the valve without concavity, said functional interconnection means comprise a first control lever for the closing rotation of the valve with concavity, a second control lever for the closing rotation of the valve without concavity, that is hinged on a same axes of the first lever and has a rotation subordinated to a removal of a mechanical block caused by said first lever in an open position, a first hydraulic cylinder to control the rotation of said first lever toward a closing position of the valve with concavity, and a second hydraulic cylinder to control the rotation of said second lever toward a closing position of the valve without concavity after the removal of said mechanical block and, subsequently, to control the release of the coupling device of the two fitting parts.