A friend had a sprinkler system installed a few years back and it works fine.
BUT, one section receives less sun and is severely overwatered. We'd like to
disable that one sprinkler head which happens to be at the end of the yard.
The company that installed it is long gone and there is no diagram of the
Is it possible (as a neighbor told us) to cap the nozzle with a screw-on type
fitting? If not, what are the alternatives (other than an inverted bucket over
The system is a Rainbird 1800. Any advice appreciated.
A quick look at Rainbird's website, And it seems the 1800 series came with
only three types of nozzles.. Plastic MPR Nozzles, VAN Series Nozzles, and
U-Series Nozzles... ( http://tinyurl.com/3y4re ) All which seem to have a
stainless steel screw ( according to associated PDF manuals ) in the middle
of the nozzle that adjusts flow and radius...
I hate to be the one to say it, but have these screws been cranked down to
slow or completely stop the flow rate from the nozzle??
Check out the link above and try to identify exactly what kind of nozzle you
are dealing with and repost... At that point a professional or homeowner
with personal knowledge of the exact system/nozzle may be able to offer a
Capping it off is certainly an easy way to do it, but if you're in a
freezing climate and need to blow the system out each fall, you'll
have to uncap that head during the blow-out. Otherwise water will fill
that section of pipe, freeze, and crack the pvc.
The nozzle can be changed or adjusted to produce less spray, or just
take off the head and cap the pipe. Putting on a head that gives less
water would be preferable, probably. If you change the head on one
sprinkler, the rest of the zone might need adjustment.
The systems I have seen have trunk lines, with a branch line to each
head, so a diagram of the system is probably not necessary.
The simplest option would be to adjust that head to allow less volume.
If that doesn't work, you could remove the head. I think the best way
to do that would be to dig a hole around the head, being careful not to
damage the line, about six or eight inches below the head. Once you
have everything cleaned up, you will see that the head is screwed into a
fixture, which is then probably slip mounted onto the line, often
without even a clamp. I would remove the head and fixture, and replace
them with a drain valve (available from an irrigation supply house that
carries rainbow), throw some gravel into the bottom of the hole (that's
your drain field), and fill the hole with dirt. I would use the drain
valve rather than a plug to avoid any problems should the system be
subject to freezing. The drain valve blocks the line when the water is
under pressure, but allows it to drain when the pressure is stopped.
If you take this option, be prepared to adjust some of the other heads,
as they will be handling more water.
SPAMBLOCK NOTICE! To reply to me, delete the h from apkh.net, if it is
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.