Sanitary diaphragm valve
AssigneeSwagelok Company
InventorsRonnie Browne, George Carlson
Life of this patent
Estimating the term…
Abstract
A sanitary diaphragm valve is provided that includes a generally dome shaped diaphragm having a central boss that can be connected to or driven by a valve actuator. The diaphragm includes an outer peripheral edge and a relatively thin web portion that connects the boss to the outer edge. In one embodiment, the web portion is arcuate or dome shaped. The thinner web portion permits the diaphragm to have an extended cycle life and to permit the valve to operate at higher fluid pressures. The diaphragm may be made from a chemically resistant material and optimized to maintain high flexure.
Claims13
A valve diaphragm having a perimeter that seals a valve cavity, wherein said diaphragm includes a web portion, a rim portion and a central stem portion, said central stem portion including an annular sealing surface that seals against a surface in said valve cavity which defines a fluid passageway;
- wherein said web portion is connected to said central stem portion and extends outward away from said central stem portion radially, said web portion being arcuate in shape.
A valve diaphragm having a perimeter that seals a valve cavity, wherein said diaphragm includes a web portion, a rim portion and a central stem portion, said central stem portion including a sealing surface that seals against a surface in said valve cavity which defines a fluid passageway;
- wherein said web portion is connected to said central stem portion and extends outward away from said central stem portion radially, said web portion being arcuate in shape;
- wherein said central stem portion extends above and below said web portion.
A valve diaphragm having a perimeter that seals a valve cavity, wherein said diaphragm includes a web portion, a rim portion and a central stem portion, said central stem portion including a sealing surface that seals against a surface in said valve cavity which defines a fluid passageway;
- wherein said web portion is connected to said central stem portion and extends outward away from said central stem portion radially, said web portion being arcuate in shape;
- wherein said web portion does not contact any portion of valve body.
A valve diaphragm having a perimeter that seals a valve cavity, wherein said diaphragm includes a web portion, a rim portion and a central stem portion said central stem portion including a sealing surface that seals against a surface in said valve cavity which defines a fluid passageway wherein said web portion is connected to said central stem portion and extends outward away from said central stem portion radially, said web portion being arcuate in shape;
- wherein said sealing surface on the central stem portion penetrates into said fluid passageway thereby forming a circumferential seal.
Dependencies are inferred from the claim text.