Sprinkler with flow guard feature

An irrigation sprinkler for releasably connecting to a downstream end of a pipe of a subterranean irrigation system, the sprinkler comprising:

• an elongate body of the sprinkler having a first passage therethrough defining a longitudinal axis, the elongate body comprising a first inlet end and a first outlet end;
• a smaller elongate body of the sprinkler configured to be disposed within and telescope upward and then downward relative to the elongate body of the sprinkler, the smaller elongate body having a second passage therethrough, a second inlet end and a second outlet end;
• the second inlet end being fluidly coupled to the first inlet end of the elongate body of the sprinkler and fluidly coupled to the second passage in the smaller elongate body;
• a nozzle rotatably mounted to the second outlet end, the nozzle comprising at least one channel fluidly coupled to the first passage of the elongate body of the sprinkler;
• and
• a valve assembly located within the second passage upstream of the second outlet end and downstream of the second inlet end, the valve assembly comprising a valve body and a valve, the valve body comprising a first port and a second port, the first and second ports each fluidly coupled to the second passage, the second port comprising an inlet, an outlet, and an internal wall, the outlet being recessed into an outer side wall of the valve body, the internal wall defining a direction for a stream of fluid to exit the outlet, the valve being operatively coupled to the nozzle and configured to move at least partially within the first port and along a longitudinal axis of the first port,
• wherein the valve assembly comprises a closed configuration when the valve seals the first port and an open configuration when the valve does not seal the first port, a location of the second port being fixed relative to the smaller elongate body when the valve assembly is in both the closed configuration and the open configuration, the second port being open when the valve assembly is in both the closed configuration and the open configuration,
• wherein the internal wall of the second port is off-axis of the first port and configured to direct the stream of fluid to exit the sprinkler at an angle that is different than the longitudinal axis of the elongate body when the valve assembly is in the closed configuration and the nozzle is not mounted to the smaller elongate body of the sprinkler, and
• wherein the nozzle and the valve assembly are configured to move with the smaller elongate body at least when the smaller elongate body telescopes downward relative to the elongate body of the sprinkler.

An irrigation sprinkler for releasably connecting to a downstream end of a pipe of a subterranean irrigation system, the sprinkler comprising:

• an elongate body having a first passage therethrough, the elongate body comprising an inlet end and an outlet end, the inlet end configured to receive an inflow of fluid;
• a smaller elongate body of the sprinkler configured to be disposed within and telescope upward and then downward relative to the elongate body of the sprinkler, the smaller elongate body having a second passage therethrough, the smaller elongate body comprising a second inlet end and a second outlet end;
• a nozzle rotatably mounted at or near the second outlet end, the nozzle comprising at least one channel fluidly coupled to the second passage of the smaller elongate body and configured to allow an outflow of the fluid;
• a valve assembly located upstream of the second outlet end and downstream of the second inlet end, the valve assembly comprising a valve body and a valve, the valve body comprising a first port and a second port, the first port having an inlet located on an upstream end of the valve body, the second port having an inlet located separately from the inlet of the first port and on an outer side wall of the valve body, the second port having a second port axis different from a longitudinal axis of the first port, the valve assembly having a closed configuration when the valve seals the inlet of the first port and an open configuration when the valve does not seal the inlet of the first port;
• and
• a filter disposed in the smaller elongate body and operatively coupled to the nozzle and the valve, the filter having a screen which filters particles out of the fluid, the filter preventing the valve from sealing the inlet of the first port when the nozzle is rotatably mounted at or near the second outlet end and allowing the valve to seal the inlet of the first port when the nozzle is rotatably removed from the second outlet end.