Using electricity to water your garden. Page: 15
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thrown first to one side and then to the other. They are not as common
as either the stationary sprinklers or the rotating sprinklers. Most of
them are made for lawn use and apply water more rapidly than is desirable
in the garden. The areas that they cover are greater than the
areas covered by most stationary sprinklers but are not nearly as large as
those covered by some of the better rotating sprinklers.
The use of rotating sprinklers is by far the most common. In general,
they are to be most highly recommended.
Rotating sprinklers fall into two groups: (1) those that are built for
lawn watering and (2) those built for irrigation. This is not a fixed
classification and there are some sprinklers that would be difficult to
classify into one or the other group. As a usual thing the lawn-type
sprinklers are relatively inexpensive devices whereas the irrigation types
are better built, are more uniform, and give a more even water distribution.
Many of the lawn-type sprinklers will place water unevenly
and as fast over an area 30 feet in diameter as a better irrigation type
will place water fairly evenly over an area 80 feet in diameter. Some of
the better irrigation types will water an area that is approximately
square. Others are adjustable so that the same sprinkler will cover
only part of a circle or a complete circle.
There is a wide variety of types of nozzles in use on lawn-type sprinklers.
Exceptions will be found to almost anything that might be said
about them. Most of the irrigation sprinklers have plain nozzles that
are rather accurately made with standard-size openings. The rates of
flow through these plain nozzles depend on the sizes of the openings and
the pressures in the sprinklers. Although they cost more, the irrigationtype
sprinklers are usually better buys for garden watering. Table 2
shows how fast you can expect nozzles with different size openings to
deliver water.
Table 2.-Roat of Water Flow Through Four Sizes of Plain Sprinkler Nozzles
GPH1 GPH1 GPH GPH'
Pressure through through through through
(pounds) 1/8-inch 5/32-inch 3/16-inch 7/32-inch
nozzle nozzle nozzle nozzle
20................. 120 180 260 350
25................. 130 205 290 390
30................. 145 225 325. 430
35................. 160 245 350 470
40................. 175 265 375 500
1 GPH= gallons per hour.
1i
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Arnold, Earl L. (Earl Lee), 1907-. Using electricity to water your garden., book, 1952; Washington D.C.. (https://digital.library.unt.edu/ark:/67531/metadc3378/m1/15/: accessed April 19, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.