Fluid flow control device having a throttling element seal
First Claim
1. A fluid flow control device comprising:
- a body defining an inlet, an outlet, and a fluid flow path extending from the inlet to the outlet;
a valve seat ring coupled to the body and defining an orifice through which the fluid flow path passes;
a cage coupled to the body and defining an interior bore, the cage including at least one passage through which the fluid flow path passes;
a throttling element sized for insertion into the cage interior bore and movable along an axis between open and closed positions, the throttling element defining a sealing surface oriented substantially parallel to the axis; and
a seal positioned to engage the sealing surface when the throttling element is substantially in the closed position, thereby to restrict fluid flow through the valve seat ring orifice.
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Accused Products
Abstract
A fluid flow control device includes a body defining an inlet, an outlet, and a fluid flow path extending from the inlet to the outlet. A valve seat ring is coupled to the body and defines an orifice through which the fluid flow path passes. A cage is also coupled to the body and defines an interior bore, wherein the cage includes at least one passage through which the fluid flow path passes. A throttling element is sized for insertion into the cage interior bore and movable along an axis between open and closed positions. The throttling element defines a sealing surface oriented substantially parallel to the axis. A seal is positioned to engage the sealing surface when the throttling element is substantially in the closed position, thereby to restrict fluid flow through the valve seat ring orifice.
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Citations
20 Claims
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1. A fluid flow control device comprising:
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a body defining an inlet, an outlet, and a fluid flow path extending from the inlet to the outlet;
a valve seat ring coupled to the body and defining an orifice through which the fluid flow path passes;
a cage coupled to the body and defining an interior bore, the cage including at least one passage through which the fluid flow path passes;
a throttling element sized for insertion into the cage interior bore and movable along an axis between open and closed positions, the throttling element defining a sealing surface oriented substantially parallel to the axis; and
a seal positioned to engage the sealing surface when the throttling element is substantially in the closed position, thereby to restrict fluid flow through the valve seat ring orifice. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A fluid flow control device comprising:
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a body defining an inlet, an outlet, and a fluid flow path extending from the inlet to the outlet;
a valve seat ring coupled to the body and defining an orifice through which the fluid flow path passes;
a cage coupled to the body and defining an interior bore, the cage including at least one passage through which the fluid flow path passes;
a throttling element sized for insertion into the cage interior bore and movable along an axis between a closed position, in which the throttling element engages the valve seat ring, and an open position, the throttling element defining a sealing surface located on an exterior perimeter of the throttling element and oriented substantially parallel to the axis; and
a seal positioned to engage the sealing surface when the throttling element is substantially in the closed position, thereby to restrict fluid flow through the valve seat ring orifice. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A fluid flow control device comprising:
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a body defining an inlet, an outlet, and a fluid flow path extending from the inlet to the outlet;
a valve seat ring coupled to the body and defining an orifice through which the fluid flow path passes;
a cage coupled to the body and defining an interior bore, the cage including at least one passage through which the fluid flow path passes;
a throttling element sized for insertion into the cage interior bore and movable along an axis between open and closed positions, the throttling element defining a sealing surface located on an interior perimeter of the throttling element and oriented substantially parallel to the axis; and
a seal positioned to engage the sealing surface when the throttling element is substantially in the closed position, thereby to restrict fluid flow through the valve seat ring orifice. - View Dependent Claims (18, 19, 20)
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Specification