公开(公告)号：EP4431777A1

公开(公告)日：2024-09-18

申请号：EP23170541.9

申请日：2023-04-28

申请人： King Lai Hygienic Materials Co., Ltd.

发明人： LIN, Cheng-Chimr

IPC分类号： F16K51/02 ,  H01L21/67 ,  F16K3/02 ,  F16K3/18 ,  F16K31/122

CPC分类号： F16K51/02 ,  F16K3/0254 ,  F16K3/188 ,  F16K31/1225

摘要： Agate valve (10) includes a valve base (20), a first piston unit disposed in the valve base (20) and driven by a fluid to move the valve door between a first position (P1) where the valve port (212) is opened and a second position (P2) where the valve port (212) is covered, a second piston unit disposed in the valve base (20) and driven by the fluid to move the valve door between the second position (P2) and a third position (P3) where the valve port (212) is sealed, and a valve door fitted to a valve port (212) of the valve base (20). At least one flow channel switch is disposed in the valve base (20). When the flow channel switch is turned on, the fluid is allowed to pass through, such that the second piston unit drives accurately the valve door to seal the valve port (212), thereby achieving purposes of enhancing accuracy in operation and ensuing airproof performance.