The Rain Bird 5000 SAM (Seal-A-Matic) includes a state of the art check valve built-in for irrigation systems dealing with elevation changes. The Next Evolution in Rotor Performance. Rugged mid-range 3/4" inlet gear-drive rotor sprinkler, offering durability, Rain Curtain nozzle performance, flow shut-off and top adjustment convenience for residential, commercial and athletic field sites with spacing up to 50 feet.