Check valve
AssigneeHamilton Sundstrand Corporation
InventorsMaciej Ostrowski, Zbigniew Jaśkiewicz
Life of this patent
Estimating the term…
Abstract
A check valve has a valve housing defining a first valve opening and a second valve opening. A first flapper is pivotably mounted around a first axis for rotation relative to the housing between an open position at which it permits fluid flow through the first valve opening and a closed position at which it prevents fluid flow through the first valve opening. A second flapper is pivotably mounted around a second axis for rotation relative to the housing between an open position at which it permits fluid flow through the second valve opening and a closed position at which it prevents fluid flow through the second valve opening. The first axis is spaced laterally from the second axis. A method is also disclosed.
Claims19
A check valve comprising:
- a valve housing defining a first valve opening and a second valve opening;
- a first flapper pivotably mounted around a first axis for rotation relative to the housing between an open position at which the first flapper permits fluid flow through the first valve opening and a closed position at which the first flapper prevents fluid flow through the first valve opening;
- a second flapper pivotably mounted around a second axis for rotation relative to the housing between an open position at which the second flapper permits fluid flow through the second valve opening and a closed position at which the second flapper prevents fluid flow through the second valve opening;
- a stop pin arranged such that the first and second flappers will contact the stop pin in their open positions;
- wherein the first axis is spaced laterally from to the second axis;
- wherein the housing comprises opposed first and second mounts, each of the mounts having a mounting post;
- wherein the stop pin extends across the valve housing between the mounting posts;
- wherein the first and second flappers are pivotably mounted between the mounts on respective flapper spindles;
- wherein each of the first and second mounts comprises a bore;
- and
- wherein each of the flapper spindles is received within a respective bore.
A method of making a check valve comprising the steps of:
- pivotably mounting first and second flappers on a pair of opposed mounts, each mount comprising a mounting post and a bore, wherein the first flapper is pivotally mounted on a first axis by a first flapper spindle in a respective bore, and between the opposed mounts for rotation between an open position at which the first flapper will permit fluid flow and a closed position at which the first flapper will prevent fluid flow, and said second flapper is pivotally mounted on a second axis by a second flapper spindle in a respective bore, and between the opposed mounts for rotation between an open position at which the second flapper will permit fluid flow and a closed position at which the second flapper prevents fluid flow, and wherein the first axis is spaced laterally from the second axis;
- mounting a stop pin to the opposed mounts such that the first and second flappers will contact the stop pin in their open positions;
- then attaching the pair of opposed mounts to a valve housing defining a first valve opening for being opened and closed by said first flapper and a second valve opening for being opened and closed by said second flapper;
- and
- wherein mounting the stop pin to the opposed mounts includes mounting the stop pin such that the stop pin will extends across the valve housing between the mounting posts after the opposed mounts are attached to the valve housing.
Dependencies are inferred from the claim text.