A lawn sprinkler is essential for the irrigation of the lawn. More extensive lawns, in particular, can only be watered very irregularly with a hose and watering can. Lawn sprinklers are available in various designs. However, the functional principle is the same everywhere.
This is how a lawn sprinkler works
A lawn sprinkler consists of several parts:
- water supply
- Stand, tripod or ground spike
- Irrigation computer on new models
The water supply is connected to the tap water, better still to a garden pump. The gear unit is anchored to the ground using a stand, tripod, or ground spike. The water is pushed through the nozzles and sprayed over the lawn.
On the side of the gearbox are on older devices adjustment knobs, with which water pressure, intervals, and spray width can be adjusted. In many sprinklers, the water pressure can also be regulated by turning the faucet at different times as an irrigation computer regulates new, electrically powered lawn sprinklers.
Sprinkler systems give users control. You can regulate the time it is turned on, the time it stays on, and what parts of a watered lawn to get. The system consists of tubes that are usually buried underground on one foot. Some self-installing pipe systems have on the ground placed just below gardening material such as pine needles. Sprinkler heads are associated with the pipes in places where they can reach all areas. The heads are adjusted so that they spray water when necessary. It can be sprayed in a full circle, or it can be set to spray with only half or a quarter of the address.
Valves are the heart of any automatic irrigation system. The valves, often made of plastic, are arranged in a line on the main pipe called a manifold. The valves use an electronic timer signal to push a plunger down onto a plastic or rubber diaphragm. The pressure releases a vacuum and allows water to flow through the valve and into the supply line. The valves are composed of the main body and a solenoid, which receives the electronic signal.
Once the water leaves the valve, it should reach the sprinklers. This is done through a series of pipes called supply lines. Most sprinkler supply lines are made of PVC, a molded plastic that is affordable, durable, and will never rust. Some older systems may have metal pipes, but these will rust and deteriorate over time. The sections of the supply lines are connected using PVC joints and fittings, which are bonded using a particular solvent.
Most sprinkler systems have an electronic timer that sends the electrical signal to the valves. These timers, which can be installed inside or outside, are configured by the user to turn on at predetermined intervals. The timers can accommodate four, six, eight, or 12 zones. Each zone represents an individual valve that is connected to the timer.
The water leaves the system through the heads of the sprinklers and finally reaches the lawn. The sprinklers are almost always buried underground. They use water pressure to stick out from the floor level and spray the lawn. The sprinklers can be made of metal or plastic, but plastic sprinklers are considered standard in the industry for residential applications. Sprinkler models include protruding sprinklers, rotating heads, and impact heads. Automatic sprinklers are great for small yards, while rotary and impact sprinklers are better for larger areas. Most sprinklers have an adjustable dew distance to define how far from the head the water reaches.
Sprinkler systems installed by professionals are controlled by a computer that can be programmed for what is needed. It can be set to turn on at different times and the length of time it can be adjusted as well. With some systems, different areas of the lawn can be activated at different times, so the water pressure is higher. With do-it-yourself systems, a basic controller sometimes comes with the set. If not, a simplistic driver can be purchased in the form of a basic time counter.
Find the optimal lawn sprinkler
When choosing the lawn sprinkler, the size and shape of the lawn play an important role. The irrigation width should be adjustable so that only the grass is sprinkled and the water does not drench the road or the walls of the house.
When setting the nozzles, there are several possibilities. The water can be spread over a wide area, circular or oscillating. Even the intervals at which the nozzle head is moved back and forth can be controlled. This prevents some parts of the lawn from being over-watered and others from being irrigated.
The new generation of lawn sprinklers
The technology has also made great progress in lawn irrigation. You can even have a sprinkler system laid underground. This avoids handling hoses and displacing the lawn sprinkler when large areas are to be watered.
New models can be controlled via the computer. The time of day can be set as well as the length of the irrigation. This is especially useful if you can not care about watering your lawn for a long time.
Tips & Tricks
The nozzles of the lawn sprinkler and the built-in filters should be cleaned occasionally. Especially when you blow up with groundwater or pond water, there are many tiny particles in the water that can clog the nozzles.