A valve allows for drainage of gases while preventing backflow of gases from a drainage system through the valve. A drain can have a first, sealed position in which a component of the valve seals an opening through the valve and a second, open position in which the component of the valve is separate
A valve allows for drainage of gases while preventing backflow of gases from a drainage system through the valve. A drain can have a first, sealed position in which a component of the valve seals an opening through the valve and a second, open position in which the component of the valve is separated from the opening to allow a fluid to drain through the valve. When the fluid has drained through, the component of the valve can return to the closed position. The valve can include a pressure relief conduit to help equalize pressure across the valve and permit unrestrained draining of fluid through the valve. The valve can be positioned in a roof vent and can include a guard.
대표청구항▼
1. A valve for a roof vent comprising: a housing configured to couple with a roof vent conduit, the housing including an inlet, an outlet, a circumferential valve seat, and a flow channel passing through the valve and through the valve seat;a flapper mounted within the housing and having a first sid
1. A valve for a roof vent comprising: a housing configured to couple with a roof vent conduit, the housing including an inlet, an outlet, a circumferential valve seat, and a flow channel passing through the valve and through the valve seat;a flapper mounted within the housing and having a first side facing a first side of the valve and a second side facing a second side of the valve, the flapper biased toward a closed position in which a sealing portion on the first side of the flapper engages with the valve seat to thereby block at least a portion of backflow through the flow channel, wherein the flapper is configured such that a minimum pressure on the first side of the flapper moves the flapper to an open position in which gas can flow through the flow channel;a pressure equalization conduit fluidly connecting a first side of the valve on the first side of the flapper with a second side of the valve on the second side of the flapper;a valve member within the pressure equalization conduit, the valve member configured to move from a closed position that substantially blocks fluid transfer between the first and second sides of the valve to an open position when a pressure on the second side of the valve exceeds a first defined pressure, thereby allowing the pressure on the second side of the valve to bleed into the first side of the valve. 2. The valve for a roof vent of claim 1, further comprising a guard configured to couple with the first side of the valve, the guard comprising a guard body that at least partially covers the first side of the valve when the guard is coupled with the first side of the valve. 3. The valve for a roof vent of claim 2, wherein the guard body comprises an elongated portion that extends at least partially over the flow channel of the valve when the guard is coupled with the first side of the valve. 4. The valve for a roof vent of claim 1, wherein the flapper is configured to rotate from the closed position to the open position about a single hinge on one radial side of the flow channel. 5. The valve for a roof vent of claim 1, further comprising a shield connected to the housing and configured to cover the pressure equalization conduit. 6. The valve for a roof vent of claim 1, wherein the flapper comprises an attachment portion and the housing comprises a flapper mount configured to receive the attachment portion, and wherein the flapper further comprises a resilient hinge connecting the attachment portion of the flapper and the sealing portion of the flapper, the resilient hinge biasing the flapper into the closed position. 7. The valve for a roof vent of claim 6, further comprising a backflow valve in fluid communication with the pressure equalization conduit, the backflow valve configured to allow backflow of fluid through the pressure equalization conduit below a second defined pressure and to substantially block backflow of fluid through the pressure equalization conduit above a second defined pressure, wherein the second defined pressure is greater than the first defined pressure. 8. A method of providing venting to a plumbing system comprising coupling the valve of claim 1 with a vent stack of the plumbing system. 9. The valve for a roof vent of claim 1, further comprising an overhang coupled with an elongate portion and that extends at least partially over an outer perimeter of the housing when a guard is coupled with the first side of the valve. 10. The valve for a roof vent of claim 9, wherein the overhang at least partially defines an overhang space thereunder and the elongated portion at least partially defines a central space thereunder, wherein the overhang space, the central space and the flow channel of the valve are in fluid communication with each other when the guard is coupled with the first side of the valve. 11. The valve for a roof vent of claim 10, wherein the elongate portion comprises one or more openings extending through a guard body. 12. The valve for a roof vent of claim 1, wherein a guard further comprises one or more fingers coupled with and extending from the guard, the one or more fingers configured to couple the guard with the first side of the valve. 13. The valve for a roof vent of claim 12, wherein the one or more fingers are flexible and are configured to flex to couple the guard with the housing of the valve. 14. The valve for a roof vent of claim 13, wherein the one or more fingers comprise a projection on an end of the one or more fingers, the projection at least partially defining a notch, the notch configured to receive a portion of the valve when the guard is coupled with the valve. 15. The valve for a roof vent of claim 13, wherein the one or more fingers comprise a finger opening extending through the one or more fingers, the finger opening configured to receive a portion of the valve when the guard is coupled with the valve. 16. The valve for a roof vent of claim 15, wherein the guard further comprises: an elongated portion of the guard body that extends at least partially over the flow channel of the valve when the guard is coupled with the first side of the valve;an overhang of the guard body coupled with the elongate portion and that extends at least partially over an outer perimeter of the housing when the guard is coupled with the first side of the valve,wherein the overhang at least partially defines an overhang space thereunder and the elongated portion at least partially defines a central space thereunder, wherein the overhang space, the central space and the flow channel of the valve are in fluid communication with each other when the guard is coupled with the first side of the valve, andwherein the elongate portion comprises one or more openings extending through the guard body. 17. The valve for a roof vent of claim 14, wherein the guard further comprises: an elongated portion of the guard body that extends at least partially over the flow channel of the valve when the guard is coupled with the first side of the valve;an overhang of the guard body coupled with the elongate portion and that extends at least partially over an outer perimeter of the housing when the guard is coupled with the first side of the valve,wherein the overhang at least partially defines an overhang space thereunder and the elongated portion at least partially defines a central space thereunder, wherein the overhang space, the central space and the flow channel of the valve are in fluid communication with each other when the guard is coupled with the first side of the valve, andwherein the elongate portion comprises one or more openings extending through the guard body. 18. A valve for a roof vent comprising: a valve housing comprising an inlet and an outlet;a one way valve positioned within the valve housing, the one way valve configured to restrict backflow through a flow channel of the housing from a second side of the one way valve to a first side of the one way valve while allowing fluid to flow through the flow channel of the housing from the first side of the one way valve to the second side of the one way valve;a pressure equalization conduit fluidly connecting the first side of the one way valve to the second side of one way valve; anda valve member configured to move from a closed position, that restricts fluid transfer through the pressure equalization conduit between the first and second sides of the one way valve, to an open position when a pressure on the second side of the one way valve exceeds a first defined pressure, thereby allowing the pressure on the second side of the one way valve to bleed into the first side of the one way valve. 19. The valve for a roof vent of claim 18, wherein the one way valve comprises a sealing membrane, and wherein the sealing membrane comprises a resilient hinge configured to bias the sealing membrane into a position to restrict backflow through the housing. 20. The valve for a roof vent of claim 18, wherein the valve housing is radially expandable to lock the valve within a roof vent. 21. The valve for a roof vent of claim 18, wherein the one-way valve allows GAS to flow through the flow channel of the housing when the one-way valve is in an open position, and wherein the one-way valve has a maximum open position in which a maximum rate of GAS flow can pass through the flow channel. 22. A method of providing venting to a plumbing system comprising coupling a one way valve with a vent stack of the plumbing system, wherein the one way valve comprises a pressure equalization conduit fluidly connecting a first side of the one way valve to a second side of one way valve, further comprising a valve member configured to move from a closed position, that restricts fluid transfer through the pressure equalization conduit between the first and second sides of the one way valve, to an open position when a pressure on the second side of the one way valve exceeds a first defined pressure, thereby allowing the pressure on the second side of the one way valve to bleed into the first side of the one way valve, and wherein the one way valve is a flapper valve.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (139)
Kiziah Floyd G. (501 N. 44th Ave. Hollywood FL 33021), Adjustable closet floor flange.
Hasha Malvern M. (11002 Twain Dr. Montgomery TX 77356) Hasha Brian B. (17211 Ash Butte Houston TX 77090), Apparatus and method for hydrostatically testing sealing face surfaces of tubular joints.
Mayfield Windel O. (Corsicana TX) Montague John M. (Dallas TX) Thomerson Clarence T. (Corsicana TX), Removable closure apparatus for hollow columnar members.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.