Control valve
AssigneeSamson Aktiengesellschaft
InventorsDaniel Graenz, Johannes Jantz, Michael Merscher, Andreas Reinthaler, Tobias Welsch
Life of this patent
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Abstract
The invention relates to a control valve for adjusting a process fluid flow of a process plant, comprising a valve housing (4) with a valve seat (10) and a valve piston (12) connected to a valve rod (14), which valve piston (12) interacts with the valve seat (10) for opening and closing the control valve (2). The invention is characterized in that, for connecting the valve rod (14) to the valve piston (12), a flange (22) is mounted on the valve rod (14), which flange (22) is screwed to the valve piston (12) via plural threaded connecting elements (34; 48).
Claims12
Control valve for adjusting a process fluid flow of a process plant, comprising:
- a valve housing (4) with a valve seat (10) and a valve piston (12) connected to a valve rod (14);
- said valve piston (12) interacts with said valve seat (10) for opening and closing said control valve (2);
- said valve rod (14) is threaded (26) and connected to a flange (22), said flange (22) is mounted on and connected to said valve piston (12) by a plurality of threaded connecting elements (34);
- at least one tangentially aligned threaded rod (68) is adapted to engage a recess (70) in said valve rod (14), said recess is delimited by a secant to the valve rod (14), said threaded rod (68) being screwed into a threaded hole (72) through said annular shoulder (52) of said flange (22).
Control valve for adjusting a process fluid flow of a process plant, comprising:
- a valve housing (4) with a valve seat (10) and a valve piston (12) connected to a valve rod (14);
- said valve piston (12) interacts with said valve seat (10) for opening and closing said control valve (2);
- said valve rod (14) is threaded (26) and connected to a flange (22), said flange (22) is mounted on and connected to said valve piston (12) by a plurality of threaded connecting elements (34);
- external teeth (74) on said valve rod (14) engage matching internal teeth of a ring gear (76) of said flange (22);
- a locking pin (78), said locking pin resides in said valve piston (12) and engages a recess of said ring gear (76) of said flange (22) thus locking said ring gear (76) with respect to said piston (12), and said external teeth of a toothed section (74) of said valve rod (14) engages in said internal teeth of said ring gear (76).
Dependencies are inferred from the claim text.