Removable valve seat member for diaphragm valve
AssigneeCircor Instrumentation Technologies, Inc.
InventorPatrick A. Lowery
Life of this patent
Estimating the term…
Abstract
An apparatus and method for a diaphragm valve includes a valve body having a chamber in fluid communication with a first channel and a second channel. A diaphragm is disposed in the chamber, and a tapered seat member is at least partially disposed in the first channel. A sleeve is compressively disposed in the seat member between the seat member and the first channel to maintain a fluid tight seal between the seat member and the first channel. A valve member is movable to controllably urge the diaphragm into and out of engagement with the seat member to control flow of fluid between the first the first and second channel.
Claims20
A diaphragm valve comprising:
- a valve body including a chamber in fluid communication with a first channel and a second channel;
- a bore formed in the first channel, the bore comprising a ridge;
- a diaphragm disposed in the chamber;
- a seat member at least partially disposed in the first channel, the seat member having an outer tapered portion, the outer tapered portion being disposable inside the valve body, the outer tapered portion of the seat member being plastically deformed by the ridge when the seat member is assembled in the bore;
- a sleeve compressively disposed in the seat member between the seat member and the first channel to maintain a fluid tight seal between the seat member and the first channel;
- and
- a valve member movable to controllably urge the diaphragm into and out of engagement with the seat member to control flow of fluid between the first and second channel.
A method for constructing a diaphragm valve, the method comprising:
- providing a valve body including a chamber in fluid communication with a first channel and a second channel;
- a bore formed in the first channel, the bore comprising a ridge;
- inserting a valve member in the valve body;
- inserting a diaphragm in the chamber between the valve member and the first channel and the second channel;
- inserting a sleeve inside a seat member having an outer tapered portion;
- inserting the seat member at least partially in the first channel, the seat member being compressively disposed between the sleeve and the first channel to provide a fluid tight seal between the seat member and the first channel, the outer tapered portion of the seat member being plastically deformed by the ridge when the seat member is assembled in the bore;
- wherein the valve member being movable to controllably urge the diaphragm into and out of engagement with the seat member to control flow of fluid between the first and second channel;
- and
- wherein the outer tapered portion is disposable inside the valve body.
Dependencies are inferred from the claim text.