Solenoid valve, especially an outlet valve for infusion water

F - Mech Eng,Light,Heat,Weapons – 16 – K

Patent

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F16K 21/00 (2006.01) A47J 31/46 (2006.01) F16K 31/06 (2006.01)

Patent

CA 1304342

ABSTRACT OF THE DISCLOSURE A solenoid valve, especially an outlet valve for infusion water. A valve chamber (2) is accommodated in a valve housing (1) and communicates with a supply channel (Z) and with a drain channel (A) by way of a valve seat (3). The magnetic armature (6) of a magnetic system accommodated on valve housing (1) is connected to a valve plate (10) accommodated in the valve chamber (2) opposite the valve seat (3). The valve chamber (2) is sealed off from the interior (11) of the magnetic system by an isolating diaphragm (12). To prevent calcium deposits, the valve seat (3) has a sheet (13) of polytetrafluoroethylene accommodated coaxially along its inner circumference and projecting beyond the surface of the valve seat (3) on the side facing the valve plate (10). The upper edge of the sheet (13) facing the valve plate (10) is in a sealing plane with respect to the valve plate. The valve plate (10) consists of a resilient material that is softer than the sheet (13), and the surface that faces the valve seat (3) is radially at an acute angle to the sealing plane in the vicinity of the contact areas.

572484

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