Description: This sprinkler is easy to install, save water, general tap water use.Often used as a rail, prefabricated board sprinkler. We turn the auto return control ring outward to move it up.At this time, the nozzle rotates 360 degrees when rotating. To control the size of the irrigation area, as long as the control loop automatically returns to the bottom of the dial, then press the angle of the limit ring: you can adjust the watering range you want. Adjust the nozzle control angle, the nozzle into the sprinkler operation, under the impact of the water gravity seesaw and the stainless steel spring into the shock force, the formation of water beatingback and forth, resulting in work, this is the automatic rotating nozzle. Nozzle operation, when the automatic rotation is adjusted to the control angle, the recoil pull rod and the return control rod are touched to the limit ring, and then rotate quickly under the impact of the rocker arm.This is how sprinklers work back and forth.