A valve assembly for sequential, transitory high-pressure spraying in a pipeline conveying pressurized liquid in which the pressurized liquid drives a spray valve into a momentary open position to enable a transitory spray of pressurized liquid and then open an outlet valve to enable throughput of the pressurized liquid to the next valve assembly deployed in the pressurized pipeline.

Some embodiments provide irrigation generator systems that include a main conduit comprising an inlet conduit and an outlet conduit; a flow control system positioned within the main conduit; a generator conduit comprising a generator inlet conduit and a generator outlet conduit, wherein the generator inlet conduit is fluidly coupled with the main conduit upstream of the flow control system, the generator outlet conduit is fluidly coupled with the main conduit downstream of the flow control system; and a generator comprising a rotor assembly cooperated with generator conduit to be physically activated by a flow of fluid through the generator conduit causing rotation of the rotor assembly and generates electrical power. The flow control system transitions between a closed state to the open state in response to a water pressure exceeding a pressure threshold.

Some embodiments provide irrigation generator systems that include a main conduit comprising an inlet conduit and an outlet conduit; a flow control system positioned within the main conduit; a generator conduit comprising a generator inlet conduit and a generator outlet conduit, wherein the generator inlet conduit is fluidly coupled with the main conduit upstream of the flow control system, the generator outlet conduit is fluidly coupled with the main conduit downstream of the flow control system; and a generator comprising a rotor assembly cooperated with generator conduit to be physically activated by a flow of fluid through the generator conduit causing rotation of the rotor assembly and generates electrical power. The flow control system transitions between a closed state to the open state in response to a water pressure exceeding a pressure threshold.