US 12,435,795 B2
Valve
Joachim Schmidt, Hettlingen (CH); Stefan Köhle, Wetzikon (CH); Roland Schnetzer, Tägerwilen (CH); and Mathias Fehlmann, Pfäffikon (CH)
Assigned to Eugen Seitz AG, Wetzikon (CH)
Filed by Eugen Seitz AG, Wetzikon (CH)
Filed on Jun. 13, 2023, as Appl. No. 18/333,761.
Claims priority of application No. 22178941 (EP), filed on Jun. 14, 2022.
Prior Publication US 2023/0400105 A1, Dec. 14, 2023
Int. Cl. F16K 1/54 (2006.01); F16K 1/36 (2006.01); F16K 31/383 (2006.01); F16K 39/02 (2006.01)
CPC F16K 1/54 (2013.01) [F16K 1/36 (2013.01); F16K 31/383 (2013.01); F16K 39/022 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A valve comprising a movable piston, a process fluid region and a compensation chamber
a) wherein the piston has a free front face which faces the process fluid region with a circumferential outer sealing region, and
wherein the piston has at least one connecting channel which connects the process fluid region to the compensation chamber,
b) wherein the outer circumferential sealing region forms a sealing cap with a circumferential sealing edge tapering to a point, or
wherein the outer sealing region is configured to be planar and to run perpendicularly to a longitudinal centre axis defined by the piston, and
c) wherein the free front face of the piston has an elevation which is surrounded by the outer sealing region,
d) wherein the elevation protrudes, in a closing direction of the valve, over the circumferential outer sealing region,
(e) wherein the piston, for opening and closing the valve, is actuated by means of a first control pressure and a second control pressure, and
wherein the piston has a first control surface for the application of the first control pressure and a second control surface for the application of the second control pressure.