How to Adjust a Rainbird 42Sa | Home Guides | SF Gate
The diagrams below depict typical Rain Bird sprinklers with all available controls. Your particular Used to adjust degree of arc sprinkler will rotate. Position one. Jan 13, Adjusting Rotor Sprinklers (Orbit model ). To adjust the spray pattern for the Orbit Rotor take the palm of your hand (or finger) and turn the. A Rain Bird Maxi-Paw A sprinkler head is adjustable so it can water lawns and planting beds with a slight overlap. Place the flat tip of a Rain Bird wrench under the top cap on the Maxi-Paw A sprinkler head and raise it upward out of the ground. Turn on the sprinkler system.
Use a rain gauge to measure rainfall: You can control the amount of water output when you use a rain gauge. Invest in a smart sprinkler system to save time as well as money and water! Rearrange your landscape into hydrozones: Next, you design and set your irrigation zones to provide the right amount of water for each zone.
Design your irrigation system so that one sprinkler head delivers enough water to meet the next spray head. Stick with the same brand of a sprinkler system, like K-Rainto accurately set up head to head coverage.
Rotary nozzles emit water more efficiently than spray heads because the nozzles deliver water at a slower rate, allowing water to percolate into the ground. Modern rotary nozzles are now available for smaller yards as well as large ones. Here are five facts you need to know about sprinkler systems.
This system has been thoroughly tested in the harshest climates and, if installed properly, will not have to be blown out. There is no need for costly service calls to blow out in the fall and turn on in the spring.
Simply disconnect the irrigation line s from the spigot s and insert the plastic end cap included in kits to prevent debris from entering. The system will self-drain. Be sure to add the in line King Drain with tee for any low lying areas where a sprinkler head will not be.
There are several available options to choose from. There are thousands of these systems in place, working exceptionally well for customers.
How many spray heads can I install per zone? Your water spigot needs to produce a minimum of 5 gpm for optimal results. You can determine your gpm by placing a metered bucket 5 gallon most common into the water flow of your spigot and timing how long it takes to fill. Be sure no water is running anywhere inside or outside the house while testing.
If the 5 gallon pail is filled in one minute you have 5 gpm. If you fill the bucket in less than one minute you have water flow that exceeds 5 gpm which is fine for these systems. For your safety it is imperative that you call Miss Dig or your Utility Companies to mark all underground lines prior to any excavation work! Check the gpm gallons per minute at your water source or spigot s to be sure there is at least 5 gpm. Most households have at least this amount.
Plan where you will place the spray heads from the examples illustrated on this site. You can shorten the spray radius by turning the screw at the top of the spray head until you achieve your desired distance. The possibilities are endless, a system can be set up for any shape or size yard!
Order your kit s accordingly from the web site to do any or all of your irrigating needs. You can add on to your lawn anytime so doing a portion now is fine.
It is best to roll the poly pipe out in the sun to allow for ease in installation. A heavy object or duct tape can hold either end from recoiling until you are ready to use. Be sure not to use the 1. This is to be used in areas that require a low angle of water for under low hanging trees, etc. These gear-drive rotors have one or more streams of water which rotate silently across the landscape. Multi-stream rotors are fascinating to watch but tend to be higher maintenance than the other types of gear-drive sprinkler heads.
Most rotors now come with a set of nozzles rather than a single nozzle. Often these nozzles come attached to what is called a nozzle tree.
Just remove the nozzle you want from the tree and install it in the rotor. Save the rest of the nozzles, you may need them later. Multiple nozzles are a big advantage, as you can change to a different size nozzle if needed to help balance your system.
Say you have a dry spot between rotors. You might be able to green it up by installing a larger nozzle in the rotors surrounding the dry spot. Some rotors, however, still come with a single, pre-installed nozzle, and some come with stripped down nozzle trees with only a few of the available nozzle sizes on them.
If you want the whole set of nozzles with these less expensive models, you must purchase them separately. A preinstalled nozzle or limited nozzle tree is common with many of the prepackaged rotors sold at discount stores. I need to mention a new type of sprinkler, which I am classifying as a rotor since it utilizes a moving stream of water. However, it operates a little different from a traditional rotor.
Sometimes called robot sprinklers, these sprinklers direct a stream of water to fall on specific spots. This works something like when you use a hose to water the yard, and you move the nozzle of the hose around to make the stream of water fall on different spots.
The size and shape of the area to be watered is programmed into a computer, the computer then controls the sprinklers, telling them where to move the stream and how much water to apply in each spot. Typically they use an electric motor to move the nozzle. What situations work best with rotor-type sprinkler heads? Typically rotors are used for sprinkler spacings from 18 feet to 55 feet apart.
Sprinkler Repair | Sprinkler Head Adjustments
There are rotors available that can be spaced closer than 18 feet but they are generally not cost effective, as a spray sprinkler will work well at this spacing and cost less. There are also rotors available for spacings farther apart than 55 feet but they are typically only used for golf courses. Most rotors require a lot more water pressure to operate than spray-type sprinkler heads. When selecting a rotor keep Stryker's Rule in mind; "the water pressure at the rotor head in PSI must exceed the distance in feet between the heads.
Figure a minimum of 15 PSI more will be required for the pipes and valves. The small rotors sold for residential use work best at 25 to 35 foot spacings, although with careful design some models can be spaced up to 50 feet apart.
As a general rule you should hire a professional designer if you need sprinkler spacings greater than 45 feet. Designing with larger sprinklers requires specialized knowledge as many unique factors must be considered in the design process.
From there it passes through a filter screen and then through a turbine. The water turns the turbine, which powers a set of gears, which rotate the sprinkler nozzle. The water then passes up through the body and exits through the nozzle.
Generally the nozzles can be removed and there are numerous nozzle sizes available. At the nozzle there is a radius reduction screw. With most rotors this screw also doubles as the set screw that holds the nozzle in place.
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Reducing the Radius and Dealing with Coverage Problems As the radius reduction screw is turned clockwise the end of the screw comes into contact with the stream of water exiting the nozzle.
This distorts the water stream and results in a reduction of the radius. There is a temptation to play around with this screw setting in an attempt to create a better water pattern.
However, most modern rotor-type sprinklers are designed to give optimum uniformity with the radius reduction screw not in contact with the water stream. Therefore you should only turn the screw so that it contacts the water stream if you need to reduce the sprinkler radius.
Be warned- most people look at the stream of water exiting the nozzle and feel it is not giving a uniform pattern. Unfortunately, this most often hurts rather than helps. The fact is that without training the average person can't tell when the water pattern is best by simply looking at it.
The moral is if you don't need to reduce the radius of the stream, then leave the screw in a position where it does not contact the water stream! With that said, there is a situation where the screw does need to be used to break up the water stream to improve the pattern. It occurs when the water pressure PSI at the rotor is below the optimum level indicating in most cases that the system wasn't designed correctly.
You can't tell if this is a problem by looking at the stream, so look at the ground around the sprinkler. If you have a low pressure problem the sprinkler will create a donut-shaped water pattern on the ground. There will be a very small green area right around the sprinkler head where water leaks from the head. Then there is a dry area for several feet the donut holewith a wet area farther out. This creates a pattern on grass shaped like a huge green donut, with a small bit of green in the very center.
If this is happening you will need to use the radius adjustment screw to break up the stream so that more water falls closer to the rotor. If there are dry patches located midway between two rotors, but no donut pattern, that usually means the rotors are spaced too far apart, or the radius adjustment screw is too far into the stream. Try backing off the radius adjustment screw until the screw does not contact the water stream.How to Adjust K-Rain Sprinkler Heads
If that doesn't fix the dry spot try using a larger nozzle size in the rotors adjacent the dry spot. Unfortunately in most cases these simple efforts to fix the problem just result in creating a new problem. For example, using a larger nozzle may cause the pressure to drop and create the previously mentioned donut pattern problem.
If new problems are created you will either need to live with dry spots, or spend some serious money making major repairs. Major repairs that are often needed include adding a booster pump to create more water pressure, relocating the rotors so that they are closer together, replacing the pipes with larger size pipes, or a combination of these. Pop-ups do just what the name implies, the sprinkler body is installed below ground and the nozzle is lifted up above ground on a riser when the sprinkler is operating.
After the irrigation is complete, the riser and nozzle are pulled by a spring back down into the sprinkler body.
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This has two advantages. The first is that the sprinkler does not detract as much from the appearance of the landscape. The second advantage is that the sprinkler is not as likely to trip someone, or be damaged by yard care equipment such as lawn mowers. Shrubs- see discussion below.