Cork can not be processed, wear seat is minimized, the crane is extended service life, reliability is increased. Find information on the implementation of these inventions do not failed. It seems that once again confirmed – "There is no prophet in his own homeland." The idea may be adopted in Russia only if it comes from the west. Therefore, you must wait until the company Cameron start making these cranes, and then our producers will be interest in such structures. In the above constructions manufacturer savings and improved reliability of the crane for the consumer is obvious. The disadvantages described above designs include the inability to change the specific pressures in the saddle at the moment of change in the management of the crane, as it holds a crane Orbit Valve. However, this is not a problem for inventors. In order to solve this problem we consider European patents on ball valves: WO/1991/014891 of 10/03/1991 and 08/31/2000 from WO/2000/050792, details can be viewed at European Patent Office.
The design feature of these cranes is that in untreated cork ball in the plane perpendicular to the orifice saddle fitted to the crane in position "closed" interact with the seats installed in the sockets, sealing with the valve. Saddles on the cork and the saddle sockets are installed and still have a slight bevel angle. This allows, as in wedge gate valves, with a small moment of control firmly close the valve. But make a crane, providing pair beveled sealing surface on the seat tube and nozzles to the crane is very difficult.