Pressure sequence controlled valve and sprinkler system using same

摘要

A lawn sprinkler system utilizes a master controller whose input is coupled to a water supply and whose output is coupled via pipe to a number of valves. The master controller is preprogrammed to supply water for a number of phases of operation, where the operation advances to a subsequent phase upon turning the supply of water off for a relatively short amount of time followed by turning the supply of water back on. Each of the valves includes an in-port and an out-port, where each valve cycles through each of the phases as controlled by the master controller. Each valve is setable/changeable to supply water to its respective out-port during a selected phase of operation.