Flow control valve
First Claim
Patent Images
1. A flow control valve comprising:
- a valve inlet configured to receive a fluid;
a valve outlet configured to output the fluid; and
a valve member assembly for controlling the fluid flow through the flow control valve, the valve member assembly comprising;
a first valve member having a first convex portion facing the valve outlet portion and including a first seal disposed thereon, wherein the first seal is made from a different material than the first valve member and is configured to engage with a first valve seat in a closed position of the flow control valve, wherein the first valve member is arranged to be urged closed by fluid entering through the valve inlet;
a second valve member having a second convex portion facing the first valve member and including a second seal disposed thereon, wherein the second seal is made from a different material than the second valve member and is configured to engage with a second, separate, valve seat in the closed position of the flow control valve, wherein the second valve member is arranged to be urged open by fluid entering through the valve inlet; and
a spool, wherein the spool, the first valve member, and the second valve member are formed of the same material and are integrally formed with each other;
wherein each of the first seal and the second seal is an O-ring made from an elastomeric material; and
wherein the valve member assembly and the valve inlet are configured such that, when in use, fluid flowing through the flow control valve exerts substantially no net force on the valve member assembly.
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Accused Products
Abstract
A flow control valve includes a valve inlet configured to receive a fluid, a valve outlet configured to output the fluid, and a valve member assembly for controlling the fluid flow through the flow control valve. The valve member assembly and the valve inlet are configured such that, when in use, fluid flowing through the flow control valve exerts substantially no net force on the valve member assembly.
162 Citations
40 Claims
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1. A flow control valve comprising:
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a valve inlet configured to receive a fluid; a valve outlet configured to output the fluid; and a valve member assembly for controlling the fluid flow through the flow control valve, the valve member assembly comprising; a first valve member having a first convex portion facing the valve outlet portion and including a first seal disposed thereon, wherein the first seal is made from a different material than the first valve member and is configured to engage with a first valve seat in a closed position of the flow control valve, wherein the first valve member is arranged to be urged closed by fluid entering through the valve inlet; a second valve member having a second convex portion facing the first valve member and including a second seal disposed thereon, wherein the second seal is made from a different material than the second valve member and is configured to engage with a second, separate, valve seat in the closed position of the flow control valve, wherein the second valve member is arranged to be urged open by fluid entering through the valve inlet; and a spool, wherein the spool, the first valve member, and the second valve member are formed of the same material and are integrally formed with each other; wherein each of the first seal and the second seal is an O-ring made from an elastomeric material; and wherein the valve member assembly and the valve inlet are configured such that, when in use, fluid flowing through the flow control valve exerts substantially no net force on the valve member assembly. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A flow control valve for a plumbing fixture, the flow control valve comprising:
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a housing having a valve inlet configured to receive water and a valve outlet configured to output water; a valve member assembly in the housing for controlling water flow through the flow control valve, the valve member assembly comprising; a first valve member including a first seal disposed thereon, wherein the first seal is made from a different material than the first valve member and is configured to engage with a first valve seat of the housing in a closed position of the flow control valve; a second valve member including a second seal disposed thereon, wherein the second seal is made from a different material than the second valve member and is configured to engage with a second, separate, valve seat of the housing in the closed position of the flow control valve; and an electrically powered heating device located in the housing for thermally disinfecting the flow control valve; wherein the housing is made of a metal or an alloy and has a thermal mass such that the electrically powered heating device is able to heat the housing to disinfect the flow control valve with a power of not more than 10 watts. - View Dependent Claims (19, 20)
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21. A flow control valve for a plumbing fixture, the flow control valve comprising:
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a housing having a valve inlet configured to receive water and a valve outlet chamber having an outlet for outputting the water; an electrically powered heating device located in the housing and configured to heat to an elevated temperature sufficient for thermally disinfecting the flow control valve; and a valve member assembly in the housing and comprising; a spool; a first valve member mounted on the spool and including a recess having a first O-ring disposed therein, wherein the first O-ring is adapted to engage with a first valve seat associated with a first valve outlet in a closed position of the flow control valve; and a second valve member mounted on the spool and including a recess having a second O-ring disposed therein, wherein the second O-ring is adapted to engage with a second, separate, valve seat associated with a second, separate, valve outlet in the closed position of the flow control valve; wherein the housing is insulated so that exposed external surfaces of the housing are not heated to the elevated temperature. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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Specification