Fluid flow control device
AssigneeOxford Flow Limited
InventorsThomas Povey, Matthew Collins
Life of this patent
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Abstract
A device (1) for controlling the flow of fluid through a conduit from an upstream side (3) to a downstream side (5). The device includes a housing (4) with a wall (6) having valve apertures (8) through which the flow of fluid is selectively controlled. A valve member (10) is mounted on one side of the wall of the housing and is arranged to move reciprocally to selectively open and close the valve apertures. A removable insert (12) is mounted on the opposite side of the wall of the housing from the valve member. The removable insert is arranged to cover some of the valve apertures.
Claims16
A device for controlling the flow of a fluid through a conduit from an upstream side of the device to a downstream side of the device, the device comprising:
- a housing comprising a wall having defined therein a plurality of valve apertures through which the flow of fluid is selectively controlled;
- a valve member mounted on a first side of the wall of the housing and arranged to move reciprocally to selectively open and close the plurality of valve apertures, thereby controlling flow of the fluid through the plurality of valve apertures;
- and
- a removable insert mounted on a second side of the wall of the housing, wherein the second side of the wall is on an opposite side of the wall from the first side of the wall, and the removable insert is arranged to cover some but not all of the plurality of valve apertures so as to prevent the flow of fluid through the some but not all of the plurality of valve apertures.
A removable insert for mounting in a fluid flow control device and for controlling the flow of a fluid through a plurality of apertures defined in a cylindrical housing of the device, the removable insert comprising an elastically deformable cylindrical body, the cylindrical body comprising one or more helically extended wall sections and one or more helically extended apertures extending around at least part of the circumference of the cylindrical body, wherein the one or more helically extended wall sections are arranged, when the removable insert is mounted on the cylindrical housing of the device, to cover some but not all of the plurality of valve apertures so to prevent the flow of fluid through the some but not all of the plurality of valve apertures and the one or more helically extended apertures are arranged, when the removable insert is mounted on the cylindrical housing of the device, to align with a remaining group of one or more valve apertures of the plurality of valve apertures so allow the flow of fluid through the remaining group of one or more valve apertures.
Dependencies are inferred from the claim text.