Check valve
First Claim
1. A poppet-style check valve comprising:
- a valve body having a bore therethrough and having an upstream inlet end, a downstream outlet end, an interior surface, and an exterior surface;
inlet connection means for connecting said inlet end of said valve body to a fluid supply;
outlet connection means for connecting said outlet end of said valve body to a fluid outlet;
a valve seat located within said valve body, said valve seat having a valve seat surface defining a bore therethrough;
a poppet having a face parallel to the valve seat surface, and a stem substantially perpendicular to said face, said poppet face being sized and shaped to be capable of covering the bore defined by the valve seat surface;
a poppet support for receiving said stem of said poppet for reciprocal movement therein between a first position in which the face of the poppet is held against the valve seat surface and a second position in which the poppet face is spaced from the valve seat surface;
sealing means for preventing flow through the check valve when the poppet is in its first position;
flow means for permitting flow through the check valve when the poppet is in its second position;
poppet control means for moving the poppet between its first position and its second position in response to changes in a differential between fluid pressure at the inlet end and fluid pressure at the outlet end of the valve body;
wherein said flow means for permitting flow through the check valve when the poppet is in its second position comprises at least one flow passage through each of the valve seat, the valve seat surface, and the poppet support, at least one flow passage around the poppet face, and an expansion of the valve body bore around the poppet face;
wherein the flow passage around the poppet face when the poppet is in its second position, is defined by a periphery of the poppet face and the valve body.
3 Assignments
0 Petitions
Accused Products
Abstract
A poppet-style check valve for allowing uni-directional flow in a fluid conducting system. The check valve comprises a valve body, and a poppet mounted therein for reciprocal axial movement between a first position in which the poppet is pressed against a valve seat restricting flow through the check valve, and a second position in which the poppet is spaced from the valve seat permitting flow through the check valve. An inner bore of the valve body is expanded in the area of the poppet to maximize flow through the check valve, and the external dimensions of the check valve are minimized by eliminating a conventional liner between the poppet and the valve body. Additionally, the elements of the valve mechanism are designed such that they lock in place within the valve body during assembly.
82 Citations
24 Claims
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1. A poppet-style check valve comprising:
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a valve body having a bore therethrough and having an upstream inlet end, a downstream outlet end, an interior surface, and an exterior surface;
inlet connection means for connecting said inlet end of said valve body to a fluid supply;
outlet connection means for connecting said outlet end of said valve body to a fluid outlet;
a valve seat located within said valve body, said valve seat having a valve seat surface defining a bore therethrough;
a poppet having a face parallel to the valve seat surface, and a stem substantially perpendicular to said face, said poppet face being sized and shaped to be capable of covering the bore defined by the valve seat surface;
a poppet support for receiving said stem of said poppet for reciprocal movement therein between a first position in which the face of the poppet is held against the valve seat surface and a second position in which the poppet face is spaced from the valve seat surface;
sealing means for preventing flow through the check valve when the poppet is in its first position;
flow means for permitting flow through the check valve when the poppet is in its second position;
poppet control means for moving the poppet between its first position and its second position in response to changes in a differential between fluid pressure at the inlet end and fluid pressure at the outlet end of the valve body;
wherein said flow means for permitting flow through the check valve when the poppet is in its second position comprises at least one flow passage through each of the valve seat, the valve seat surface, and the poppet support, at least one flow passage around the poppet face, and an expansion of the valve body bore around the poppet face;
wherein the flow passage around the poppet face when the poppet is in its second position, is defined by a periphery of the poppet face and the valve body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification