Dry valve for sprinkler system
AssigneeThe Viking Corporation
InventorsShawn J. Feenstra, Vinh B. Hoa
Life of this patent
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Abstract
A dry valve is provided for a sprinkler system, including a housing including a valve body having an inlet end and a valve cover having an outlet end. A prime chamber housing is disposed within the housing and defines a prime chamber. A prime piston is disposed within the prime chamber and is movable between a closed position seated against a valve seat and an open position received within the prime chamber. A check valve diaphragm assembly is disposed within the housing and disposed against the prime chamber housing in a closed position and spaced from the prime chamber housing in an open position.
Claims20
A dry valve for a sprinkler system, comprising:
- a housing having an inlet end and an outlet end and a passage therebetween;
- a prime chamber housing disposed within said housing and defining a prime chamber in communication with a prime chamber inlet and fluidly isolated from said passage, said prime chamber housing including a generally flat planar first valve seat on a downstream face of said prime chamber housing;
- a prime piston disposed within said prime chamber, said prime piston being movable between a closed position seated against a second valve seat in response to a supply of fluid to said prime chamber inlet and an open position received within said prime chamber in response to an interruption in said supply of fluid to said prime chamber inlet;
- a check valve assembly disposed within said passage in said housing and movable between a closed position and an open position, said check valve assembly being disposed against said generally flat planar first valve seat of said prime chamber housing in said closed position, wherein said inlet end of said housing and said prime chamber inlet are supplied with water at a common pressure and said outlet end and check valve assembly are supplied with air at a predetermined pressure.
A dry valve for a sprinkler system, comprising:
- a housing including a valve body having an inlet end and a valve cover having an outlet end and a passage extending between said inlet end and said outlet end;
- a prime chamber housing disposed within said housing and defining a prime chamber in communication with a prime chamber inlet and fluidly isolated from said passage, said prime chamber housing including a generally flat planar first valve seat on a downstream face of said prime chamber housing;
- a prime piston disposed within said prime chamber, said prime piston being movable between a closed position seated against a second valve seat in response to a supply of fluid to said prime chamber inlet and an open position received within said prime chamber in response to an interruption in said supply of fluid to said prime chamber inlet;
- a check valve diaphragm assembly disposed within said housing and disposed against said generally flat planar first valve seat of said prime chamber housing in a closed position and spaced from said prime chamber housing in an open position, wherein said inlet end of said housing and said prime chamber inlet are supplied with water at a common pressure and said outlet end and check valve assembly are supplied with air at a predetermined pressure.
Dependencies are inferred from the claim text.