Apparatus for controlling flow and pressure measurement
First Claim
1. An apparatus comprising:
- a valve body having a chamber and first and second ports communicating with said chamber;
a valve element mounted at least partially in the chamber of the valve body for rotational movement relative to the valve body between first and second rotational positions and for axial movement relative to the valve body between first and second axial positions;
said valve element and said valve body cooperating to define a flow passage between said ports which provides different flow characteristics in the first rotational position than in the second rotational position when the valve element is in said first axial position; and
means responsive to movement of the valve element to the second axial position at least when the valve element is at the first rotational position for providing for flush flow through said chamber and between said ports with the flush flow being greater than the flow in either of said rotational positions with the valve element in said first axial position.
3 Assignments
0 Petitions
Accused Products
Abstract
An apparatus comprising a valve body having first, second and vent ports and a generally tubular valve element having a peripheral wall with first, second and vent openings in the peripheral wall leading to the interior of the tubular valve element. The valve element is mounted in the valve body for rotational movement between first and second rotational positions and for axial movement between first and second axial positions. A pressure sensor is exposed to the fluid pressure within the valve body. In the first rotational position of the valve element, drip flow is provided between the first and second ports, and in the second rotational position, the vent port is open to provide communication between the pressure sensor and the atmosphere. To provide flush flow between the first and second ports, the valve element is moved to the second axial position.
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Citations
19 Claims
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1. An apparatus comprising:
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a valve body having a chamber and first and second ports communicating with said chamber; a valve element mounted at least partially in the chamber of the valve body for rotational movement relative to the valve body between first and second rotational positions and for axial movement relative to the valve body between first and second axial positions; said valve element and said valve body cooperating to define a flow passage between said ports which provides different flow characteristics in the first rotational position than in the second rotational position when the valve element is in said first axial position; and means responsive to movement of the valve element to the second axial position at least when the valve element is at the first rotational position for providing for flush flow through said chamber and between said ports with the flush flow being greater than the flow in either of said rotational positions with the valve element in said first axial position. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An apparatus comprising:
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a valve body having a chamber and first and second ports communicating with said chamber; a valve element mounted at least partially in the chamber of the valve body for rotational movement relative to the valve body between first and second rotational positions and for axial movement relative to the valve body between first and second axial positions; means defining a flow passage between said first and second ports with at least a portion of the flow passage being of relatively restricted cross-sectional area when the valve element is in said first rotational position and said first axial position whereby the flow passage can provide restricted flow between the first and second ports; means responsive to movement of the valve element to the second axial position at least when the valve element is at the first rotational position for greatly enlarging the cross-sectional area of the flow passage whereby the flow passage can accommodate flush flow; and means responsive to the valve element being in the second rotational position and said first axial position for providing a flow characteristic in said flow passage which is different from said restricted flow. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An apparatus comprising:
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a valve body having first, second and vent ports; a generally tubular valve element having a peripheral wall with first, second and vent openings in the peripheral wall leading to the interior of the tubular valve element; said valve element being mounted in said valve body for rotational movement relative to the valve body between first and second rotational positions and for axial movement relative to the valve body between first and second axial positions; said second opening and said second port being in communication when the valve element is in said first rotational position and the first axial position; regions of said valve body and said peripheral wall cooperating to define a restricted passage extending from the first port to the first opening when the valve element is in the first rotational position and the first axial position whereby the restricted passage provides a restriction to flow and restricted flow can occur between the ports; said valve element when in the first rotational position being movable from the first axial position to the second axial position to eliminate said restriction to flow sufficiently so that flush flow can occur between the first and second ports; said peripheral wall closing said vent port in said first rotational position and said vent opening communicating with said vent port in the second rotational position to provide communication from the vent port to the interior of the valve element; and means for resiliently biasing the valve element in a direction from the second axial position to the first axial position. - View Dependent Claims (18, 19)
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Specification