Pressure and flow regulation device
AssigneeRain Bird Sprinkler Mfg. Corp.
InventorCharles J. Flynn
Life of this patent
Estimating the term…
Abstract
For use in a sprinkler system a pressure and flow regulation device comprising a snap acting valve which includes a movable valve closure having a spring biasing the valve closure toward a closed position and a diaphragm having a surface disposed to be acted upon by inlet water pressure to urge the valve closure to an open position against the bias of the spring, only when a predetermined inlet pressure is reached, and a pressure regulator constructed integrally with the snap acting valve for automatically regulating the pressure of water supplied to a sprinkler to a selected level.
Claims7
For use in a sprinkler system, a pressure and flow regulation device comprising:
- a pressure actuated, snap acting valve for positively initiating flow to a sprinkler only after a predetermined minimum supply pressure is reached, said snap acting valve including:
- valve closure means movable between open and closed position,
- means biasing said valve closure toward said closed position, and
- diaphragm means coupled with said valve closure and having a surface disposed to be acted upon by water pressure to urge said valve closure to said open position, said diaphragm serving to open said valve closure slightly when the supply pressure reaches said predetermined pressure and to thereby expose a larger area of said valve closure to the supply pressure and force it rapidly open against the bias of said biasing means;
- and
- pressure regulation means constructed integrally with said snap acting valve for automatically regulating the pressure applied to the sprinkler to a selected value, whereby said snap acting valve eliminates undesirable low pressure flow to the sprinkler, and said pressure regulation means ensures that the sprinkler operates at a desired optimum pressure.
For use in a sprinkler system, a combined pressure regulation and flow check valve device, comprising:
- pressure-actuated check valve means for positively initiating flow to a sprinkler as a predetermined minimum supply pressure is reached, including
- valve closure means movable between open and closed positions,
- resilient means for urging said valve closure means toward said closed position,
- chamber means, and
- diaphragm means defining a wall of said chamber means, for positively moving said valve closure means to said open position, whereby the predetermined minimum supply pressure is sufficient to open said valve closure means slightly, thereby exposing a larger area of said valve means to the supply pressure and forcing it rapidly open;
- pressure regulation means constructed integrally with said check valve means, for automatically regulating the pressure applied to the sprinkler to a predetermined value, and including
- a pressure-regulating disk rigidly attached to said valve closure means, and
- pressure-regulator chamber means surrounding said disk;
- and
- removable retaining means for holding said pressure-regulator chamber means in an assembled position with respect to said disk and said check valve means.
Dependencies are inferred from the claim text.