Patent ID: 7306170
Filing Date: 2007-12-11
Classification: B05B

Abstract:
1. A device for restricting water flow through a water conduit in a landscape sprinkler system, wherein the conduit comprises a hollow pipe having an interior wall, the device comprising: a generally rigid disc having a plurality of radial cuts around an external periphery shaped to conform to the interior wall of the conduit wherein said external periphery is operable to frictionally secure the disc transverse to the interior wall of the conduit, adjacent of said radial cuts defining segments of the rigid disc therebetween wherein a plurality of said defined segments, which generally abut one another, circumscribe the entire periphery of the rigid disc; and at least one aperture in the disc to permit water flow therethrough, wherein the total area of any apertures in the disc are from about 1% to about 40% of the cross-sectional area of the disc.