How does a sprinkler rotate

The sprinkler head pivots on a bearing on top of its threaded attachment nut. The head is driven in a circular motion by the force of the outgoing water, and at least one arm extends from the head. The sprinkler arm is repeatedly pushed back into the water stream by a spring.

What makes a sprinkler head rotate?

When in operation, water turns a small turbine in the base of the sprinkler, which drives a series of gears that cause the head to rotate. The Hunter gear drive mechanism is sealed from dirt and debris.

How does a sprinkler change direction?

When you have the sprinkler going, use a flat-head screwdriver to rotate the adjustment screw found on the top of the nozzle. If you need to increase the width of the spray pattern, turn the screw counterclockwise. If you want to decrease it, turn the small screw clockwise.

How do sprinklers move?

The oscillating sprinkler works on the principle that water provides the power to move the elliptical cam (or heart-shaped cam in some models) which moves the sprinkler arm. Water spins a simple turbine which must be attached to a series of gears stacked up (called a gear train) to slow down the speed of the water.

Why is my oscillating sprinkler not rotating?

If the water level is too low, the distribution bar on an oscillating sprinkler may be unable to move at all, or it may move very slowly to the end of the cycle, then be unable to move past the pivot that sends it back in the opposite direction. (This varies a lot between models.

How does a sprinkler go back and forth?

Oscillating Sprinkler Basics Connected to the knob there is small arm that gets pushed and pulled by a heart-shaped cam. When the sprinkler is running, the cam rotates slowly — at roughly 1 revolution per minute (rpm) — this is what causes the arm to oscillate back and forth.

How do I stop my sprinkler head from rotating?

Sprinklers may be adjusted with water on or off. It is recommended that initial adjustments be made before installation. Using the palm of your hand, rotate the nozzle turret counterclockwise to the left stop to complete any interrupted rotation cycle. Rotate the nozzle turret clockwise to the right stop.

What is the arc on a sprinkler?

Arc: The degrees of coverage of a sprinkler from one side of pattern to the other. A 90-degree arc would be a quarter-circle sprinkler. In other words, the arc is how far to the left and to the right the sprinkler will be adjusted to rotate.

Why does my sprinkler get stuck?

The most common cause of a stuck sprinkler head is dirt and debris. If dirt, rocks, leaves, or grass gets caught between a sprinkler body and the sprinkler riser, it can clog up the works and stop the riser from sliding back into the body. Resulting in a sprinkler head that won’t go down.

How do you adjust Rainbird rotating sprinkler heads?

To adjust your Rainbird sprinklers, twist the spray head to the right or left if you want to change the water’s direction. To reduce the spray distance, use a flat-bladed screwdriver to turn the screw on the nozzle clockwise.

Article first time published on

Are oscillating sprinklers good?

Oscillating Sprinklers This is probably one of the best sprinklers for kids during the summer, since they can jump over it and play in the spray. However, it does have some faults. If you have lower water pressure, it may not spray far enough. If you have high water pressure, it may spray too far.

How long should I leave my oscillating sprinkler on?

Most oscillating sprinklers will put off about one inch of water an hour. That would mean that you would need to water your lawn for one hour, once a week. Most established lawns need between one and two inches of water each week to thrive.