Sprinkle with velocity control disc
AssigneeHunter Industries, Inc.
InventorLoren W. Scott
Life of this patent
Estimating the term…
Abstract
A pop up sprinkler unit includes a housing having an inlet including a passage for connecting to a source of fluid such as water or air, a pressure responsive inlet valve assembly including a valve seat surrounding the inlet, a valve member having annular sealing normally biased into engagement with the seat, and a velocity control disc mounted on the valve member and extending into the passage at the inlet, the velocity control disc metering initial inlet fluid for controlling the rate of opening of the valve for controlling flow of fluid through the valve to a nozzle and extension of a riser to an extended position.
Claims20
A sprinkler unit, comprising:
- a housing having an inlet including a passage for connecting to a source of fluid;
- a riser mounted in said housing for moving from a normally retracted position to an operative extended position in response to fluid pressure;
- a pressure responsive inlet valve assembly including a valve seat surrounding said inlet and a valve member having annular sealing means biased into engagement with said seat;
- and
- damping means mounted on said valve member and extending into said passage at said inlet, said damping means metering initial inlet fluid for controlling the rate of opening of said valve member for controlling flow of fluid through said inlet valve assembly and extension of said riser to said extended position.
A sprinkler unit comprising:
- a housing having an inlet passage for connecting to a source of fluid;
- a riser mounted in said housing for moving from a normally retracted position to an operative extended position in response to fluid pressure;
- an annular valve seat surrounding an inner end of said inlet passage;
- a pressure responsive inlet valve member mounted for movement into and out of engagement with said valve seat;
- a seal member carried by said valve member and sealingly engageable with said valve seat;
- and
- damping means mounted on said valve member and extending into said inner end of said inlet passage, said damping means metering initial inlet water for controlling the rate of opening of said valve for controlling flow of fluid through said valve and extension of said riser to said extended position.
A pop-up rotary sprinkler unit comprising:
- an elongated generally cylindrical housing having an inlet coaxially disposed at one end for connecting to a source of fluid, and an outlet including a nozzle at another end for distributing water outward from said housing, a passage correcting said inlet to said outlet;
- a riser mounted in said housing between said inlet and said outlet for moving from a normally retracted position to an operative extended position in response to fluid pressure;
- and
- a flow control valve assembly in said passage at said inlet, said valve assembly comprising an annular valve seat surrounding said inlet, a first cylindrical bore coaxially of said valve seat, a valve member mounted for movement into and out of engagement with said valve seat, damping means including a stepped diameter disc mounted on said valve member and extending into said passage at said inlet, said damping means metering initial inlet water for controlling the rate of opening of said valve for controlling flow of fluid through said valve and extension of said riser to said extended position.
Dependencies are inferred from the claim text.