Patent ID: 6792962
Filing Date: 2004-09-21
Classification: F16K,Y10T

Abstract:
An anti-siphoning device for use with an irrigation system, the anti-siphoning device comprising:an interior wall defining an outlet orifice; an exterior wall extending around the interior wall, wherein the exterior wall cooperates with the interior wall to define an inlet orifice; a plunger movable between an open position and a closed position, wherein the plunger covers the inlet orifice to block irrigation water flow into the inlet orifice in the closed position, and to permit irrigation water flow out of the inlet orifice in the open position; a plunger retainer attached to the housing, the plunger retainer having at least one feature shaped to contact the plunger to maintain alignment of the plunger with the inlet and outlet orifices; and a cap attached to the plunger retainer, the cap having a vent shaped to permit air to enter the anti-siphoning device in response to low pressure within the anti-siphoning device.