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1. (WO2016096271) SWITCHABLE VALVE, IN PARTICULAR FOR A PIPETTE DEVICE

Pub. No.:    WO/2016/096271    International Application No.:    PCT/EP2015/076571
Publication Date: Jun 23, 2016 International Filing Date: Nov 13, 2015
IPC: F16K 11/078
B01L 3/02
F16K 3/26
G01N 30/20
F16K 31/50
Applicants: HAMILTON BONADUZ AG
Inventors: LECKEBUSCH, Klaus
LANGE, Martin
PEETZ, Torsten
Title: SWITCHABLE VALVE, IN PARTICULAR FOR A PIPETTE DEVICE
Abstract:
The invention relates to a valve (10) with a switching arrangement, comprising a valve seat (20) and a valve body (26) which is movable relative to the valve seat (20) about and/or along a switch axis (S) that defines an axial direction (A), a radial direction (R), and a circumferential direction (U). A valve body (26) wall (26a) facing the valve seat (20) is in contacting engagement with a valve seat (20) wall (20a) facing the valve body (26) regardless of the operating position of the valve seat (20) and the valve body (26) relative to each other. The switching arrangement is arranged fluidically between at least one first fluid line (22a) and at least one second fluid line (22b). One component of the valve seat (20) and the valve body (26) has at least one first throughflow opening (28), which is coupled to the at least one first fluid line (22a) for a common throughflow, and a second throughflow opening (30), which is coupled to the at least one second fluid line (22b) for a common throughflow. The respective other component of the valve body (26) and the valve seat (20) has a connection channel (32), by means of which a fluidic connection between the at least one first (28) and the at least one second throughflow opening (30) can be changed on the basis of an operating position that can be produced by means of a relative movement between the valve body (26) and the valve seat (20). The invention is characterized in that the valve (10) has a clamping device (36; 136) which applies a clamping force to the body wall (26a), said force acting on the seat wall (20a) in a radial direction.