公开(公告)号：US20250027570A1

公开(公告)日：2025-01-23

申请号：US18766737

申请日：2024-07-09

Applicant: CKD CORPORATION

Inventor： Tatsuhito AOYAMA ,  Shinya Takahashi

IPC: F16K7/17 ,  F16K25/00 ,  F16K31/122

Abstract: A fluid control valve includes a pressing member, a diaphragm member, and a valve seat. The pressing member presses and deforms the diaphragm member into contact with the valve seat. The valve seat includes a first annular valve seat made of fluorine resin and a second annular valve seat made of heat-resistant resin, which are arranged concentrically adjacent to each other. The heat-resistant resin has a higher deflection temperature under load at 1.82 MPa than the fluorine resin, measured according to ASTM D-648.