ADJUSTABLE ARC OF COVERAGE CONE NOZZLE ROTARY STREAM SPRINKLER WITH STEPPED AND SPIRALED VALVE ELEMENT

摘要

A cone valve assembly including an upper valve member with a conical top portion and an axially stepped and spiraled top surface and a lower valve member including a central opening with a stepped and spiraled valve surface or edge surrounding the central opening. The upper valve member is mounted in the lower valve member such that the lower valve member is rotatable and axially movable relative to the upper valve member. Rotation of the lower valve member allows for the adjustment of an arcuate slot opening that provides a conically shaped discharge stream of water from the cone valve nozzle assembly directly onto the rotating distributor to provide the desired arc of sprinkler coverage.

主权项

1. A valve assembly for use in a rotary stream sprinkler comprises:
an upper valve member including a conical top portion with an axially stepped and spiraled underside valve surface; and a lower valve member including a central opening and a radially stepped and spiraled edge surrounding the central opening, the upper valve member mounted in the lower valve member such that the lower valve member is movable axially relative to the upper valve member such that interaction between the stepped and spiraled underside valve surface of the upper valve member and the stepped and spiraled edge of the lower valve member defines an adjustable arcuate slot of a desired height and length to provide a conically shaped nozzle water discharge stream over a desired arc of coverage when water flows through the valve assembly.