Mensur wrote:
On Nov 20, 9:01 pm, dave a wrote:
Mensur wrote:
I have anirrigationsystem that I need towinterize. In the past I
used to hire a guy who installed the sprinklers but since I already
have the compressor and everything else I need, I'd rather save $70.
I've seen him hook up the compressor somewhere on the back low but I
don't know where. I was hoping that someone would be able to tell me
where to attach it and if there is anything else special I would need
to do.
Here are some pictures of my backflow:
http://www.medicfamily.com/tmp/DSC02319.JPG
http://www.medicfamily.com/tmp/DSC02320.JPG
http://www.medicfamily.com/tmp/DSC02321.JPG
Thanks!
Well, you would first Google Wilkins Zurn to find the manufacturer's
website. Then you would use the search tool on that website to find the
975XL backflow preventer. Finally you would download the Installation,
Testing, and Maintenance Instructions. The diagrams provided would then
clearly indicate that you can attach your compressor to Test Cock #4.
You would, of course, also want to know what pressure is acceptable to
use by referring to the specification page.

Or you could just pay the guy $70 to do the work for you. Heck, for $50
bucks I'll send you the pdf since I already did the work to find the
little bit of information for you.

- dave a- Hide quoted text -

- Show quoted text -

I read the pdf but didn't see anything about winterizing. How did you
figure it out? Do I need to open test cock #4 before I attch the
compressor? What about any other test cocks?


Well, all of my advice is simply from looking at your pictures and
reading the Installation and Maintenance pdf. Test cock #4 appears to
be on the output side of the regulator. Therefore, I would think the
procedure is to close the input valve, attach the compressor to #4,
slowly open #4. I assume you also have downstream valves to control
individual watering stations. It would seem obvious that to drain the
system you will need to open each of the downstream valves and let the
air force the water out.

The other test cocks appear to allow pressure monitoring within
different sections of the regulator and would not be used for what you
are doing.

I would make sure the air pressure is high enough to clear the water but
not so high as to blow out the diaphrams in your regulator.

Remember, $70 is a lot less than a new regulator or irrigation system.