公开(公告)号：US10167960B2

公开(公告)日：2019-01-01

申请号：US14956094

申请日：2015-12-01

Applicant: CKD CORPORATION

Inventor： Shinji Ishikawa ,  Michio Miyashita ,  Hiroyuki Murase

IPC: F16K1/36 ,  F16K25/04 ,  F16K41/10 ,  F16K41/12 ,  F16K1/42 ,  F16K1/34

Abstract: A fluid control valve includes: a drive section; body provided with first port, second port, and valve seat; and valve element formed columnar-shaped and coupled with the drive section, and the valve element includes annular sealing protrusion annularly protruding from end face located on side facing the valve seat, the sealing protrusion being provided at leading end with annular sealing portion to be pressed against the valve seat for sealing and at least the annular sealing protrusion is made of fluororesin. The valve element is configured such that the annular sealing portion is radially displaced with displacement amount of no more than 6.175 μm when the annular sealing portion is pressed against the valve seat by the drive section so that abrasion caused by deformation of the valve element in valve closing is restrained and generation of particles is prevented.

公开(公告)号：US12076934B2

公开(公告)日：2024-09-03

申请号：US17605488

申请日：2020-05-28

Applicant: CKD CORPORATION

Inventor： Hiroyuki Murase ,  Atsushi Tsuneduka

IPC: B29C65/00 ,  B29C65/16 ,  B29C65/02 ,  B29C65/14 ,  B29L31/00 ,  F16K1/36 ,  F16K1/42 ,  F16K31/122

CPC classification number: B29C65/1612 ,  B29C66/81267 ,  B29C65/00 ,  B29C65/02 ,  B29C65/14 ,  B29C65/1412 ,  B29C65/1448 ,  B29L2031/7506 ,  F16K1/36 ,  F16K1/42 ,  F16K31/122

Abstract: A manufacturing method is provided for a fluid control apparatus, in which the flow of a fluid is controlled by bringing a diaphragm valve element into contact with or separating the diaphragm valve element from a valve seat. The diaphragm valve element may be a joint body that is a combination of (a) a seat member that makes contact with the valve seat and (b) a body member. The joint body is formed by machining a material joint body obtained by welding together a seat-member material which is a material for the seat member and a body member material which is a material for the body member. The welding is performed on contact faces of the seat-member material and the body-member material of the material joint body in a range wider than contact faces of the seat member and the body member of the joint body.