Lawn sprinklers are devices used to irrigate lawns and landscaped areas,
especially during periods of low rainfall. Lawn irrigation may be
accomplished with a portable lawn sprinkler or a permanently installed
underground sprinkler system. You can find either type of
lawn sprinkler at eBay
or at local home centers and hardware stores.
Portable Lawn Sprinklers
There are several types of portable sprinklers, and each type
is best suited to certain lawn shapes and landscape configurations.
The simplest type is the sprinkler hose, which is suitable for long,
narrow areas. The sprinkler hose contains tiny holes
along its top side that emit a fine, soaking mist.
The other four lawn sprinkler variations are attached to garden hoses:
A turret sprinkler consists of multiple sprinkler heads that spray
circular or rectangular patterns of varying widths and lengths.
An oscillating sprinkler features an oscillating spray bar
that evenly douses a rectangular area. The spray bar can be set
to water both sides of the sprinkler or either side of the sprinkler.
A pulsating sprinkler sprays water in a circular pattern
with an adjustable arc of coverage.
A traveling sprinkler waters a long, rectangular area,
using its hose to guide and track its direction of travel.
Although mechanical and electronic timers are available to control
the watering cycles of these portable sprinklers, many homeowners
prefer the convenience of an automated lawn sprinkler system.
Underground sprinkler systems, which consist of a timing unit plus
a network of water pipes and sprinkler heads buried in the ground,
are becoming more popular in many areas. The automated timer opens
and closes water valves at preset times. When the valves open, water
pressure in the system causes sprinkler heads to pop up above the ground
and spray water on the lawn in overlapping coverage areas.
When the valves close, the sprinkler heads drop down level with the lawn
surface. In climates where ground temperatures drop below freezing,
the water pipes must be drained to prevent them from icing and bursting.
Several types of sprinkler heads are used to ensure adequate irrigation
of the lawn and adjacent landscape areas. Spray heads send a steady
shower over a small area. Impulse heads shoot water jets from a
rotating nozzle over a larger area. Both types come in plastic or
more expensive brass versions, and both types are also available in
special purpose standing heads that do not "pop up" but are situated
above ground, next to a foundation or at the edge of a yard, for instance.
Dramm's sprinkler line includes water timers as well as portable oscillating sprinklers,
turret sprinklers, impulse sprinklers, and whirling sprinklers. www.RainWand.com
This Week in 1983: ADT designs security system to end false alarms
The technology sought to combine disparate technologies widely used for burglaries, fire, holdups, sprinklers and lost items at businesses.
Emon Reiser. American City Business Journals. Thursday, 05 Nov 2020 12:22:57 +0000.
Little Girl Cooling Off in Water
Sprayed From A Lawn Sprinkler