| 摘要 |
A diaphragm valve for fluid control includes a valve housing having a valve chamber, into which at least three passageways open. The the passageways have associated therewith valve seats provided in the valve housing. Further, the diaphragm valve for fluid control includes a diaphragm having various diaphragm sections that can be pressed against associated valve seats in order to selectively open and close flow connections between passageways. Further, the diaphragm valve for fluid control includes at least two control pistons, which are displaceably accommodated in respectively one cylinder chamber and are respectively coupled with the associated diaphragm section via a pressure transfer unit in order to move the diaphragm section, during the movement of the control piston, into an opening or closing position, wherein the cylinder chambers are located at the same axial height, so that the control pistons can be moved next to each other. |
| 主权项 |
1. A diaphragm valve for fluid control, comprising a valve housing having a valve chamber, into which at least three passageways open, wherein the passageways have associated therewith valve seats provided in the valve housing, a diaphragm having various diaphragm sections which can be pressed against associated valve seats in order to selectively open and close flow connections between passageways, and at least two control pistons which are displaceably accommodated in respectively one associated cylinder chamber and which are respectively coupled with its associated diaphragm section via a pressure transfer unit in order to move the associated diaphragm section into an opening or closing position during the movement of the control piston, wherein the cylinder chambers are located at the same axial height, so that the control pistons can be moved next to each other, wherein the control pistons have, if viewed in the direction of movement, a substantially flat peripheral wall section and an arc-shaped peripheral wall section, wherein the flat peripheral wall section of adjacent control pistons face each other. |
