Back to results
US 12,578,024 B2Granted
Fluid control valve
AssigneeCkd Corporation
InventorsTatsuhito Aoyama, Shinya Takahashi
Life of this patent
Estimating the term…
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.
Claims4
A fluid control valve comprising:
- a pressing member;
- a diaphragm member;
- a valve chamber;
- and
- a valve seat provided in the valve chamber,
- the fluid control valve being configured to press and deform the diaphragm member by the pressing member to bring the diaphragm member into contact with the valve seat,
- wherein 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 positioned 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, and
- the first annular valve seat and the second annular valve seat are swaged and fixed to the valve chamber.
6 more elements
Dependencies are inferred from the claim text.