Danny D. wrote:
On Tue, 06 Nov 2012 06:59:55 -0800, wrote:

There are some curious fittings on many of these backflow preventers.
I had a sprinkler guy install a new system and he said they are for
testing purposes and someday some code official might want to use
them for testing, but he'd never seen it done.

I called up Wilkins Zurn (Wilkins Water Works) technical support.
They told me those four fittings are for testing purposes, as
you had surmised.

I'm reading all I can on it from the datasheets right now since
it's a $755 part with a $55 repair kit - but, as you know,
repairing (fixing) takes more effort than simple replacement.


So replace it. What is it, 2"? You can buy 2" brass check valves for less
than $50.
http://www.amazon.com/American-Valve.../dp/B001GLZQAQ

If it isn't 2", here are some more...
http://www.grainger.com/Grainger/wwg...1 106183650:s

--

dadiOH
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