Patent ID: 8662414
Filing Date: 2014-03-04
Classification: A01G,F16K,G05D

Abstract:
1. A watering device including: a main body including a main inlet for receiving pressurized water; an intermediate cap member in fluid communication and sealingly engaged with the main body, the intermediate cap member including a base portion including at least one channel formed in the base portion and extending between a periphery of the base portion to an inlet of a central bore extending from the base portion and through the intermediate cap member; a top cap member sealingly engaged with the intermediate cap member and in fluid communication with an outlet of the central bore, the cap member including at least one watering outlet; a diaphragm substantially covering the base portion of the intermediate cap member, located between the intermediate cap and the main body, the diaphragm arranged to interact with water flowing from the main inlet of the main body of the watering device to divert water to flow through the at least one channel to the inlet of the central bore and in combination with the at least one channel to function as a pressure compensator for substantially maintaining the flow rate of the watering device by modifying the effective size of the at least one channel depending on inlet water pressure, wherein the at least one channel includes a channel compensation arrangement to compensate for the behavior of the diaphragm at different inlet water pressures to increase the range of inlet water pressures over which the pressure compensator substantially maintains the flow rate of the watering device.