Patent ID: 8925837
Filing Date: 2015-01-06
Classification: B05B

Abstract:
1. A sprinkler head comprising: a deflector having an underside surface contoured to deliver fluid generally radially outwardly therefrom; a nozzle body defining an inlet, an outlet, and a flow rate adjustment valve disposed upstream from the outlet, the inlet configured to receive fluid from a source and the outlet configured to direct fluid toward and against the underside surface of the deflector and to define an arcuate span of fluid distribution; the flow rate adjustment valve for adjusting the flow rate of fluid through the sprinkler head, the valve comprising a first valve body and a second valve body; a flow path from the inlet, through the flow rate adjustment valve, through the outlet, to the deflector and outwardly away from the deflector; wherein the first valve body has a first helical surface and wherein the second valve body has a second helical surface, the first and second helical surfaces engageable with one another and movable with respect to one another for changing the size of an opening defined by the first and second valve bodies; wherein the flow rate adjustment valve is spaced a minimum predetermined distance upstream from the outlet such that the size of the opening is independent of the arcuate span of fluid distribution from the deflector.