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Author:
jjsusa (IL)
Hello:
I want to install a water powered backup sump pump in my home. I live in the western suburbs of Chicago, IL. I realize I need a backflow prevention device, but I am confused as to what type. Reading SECTION 890.1130 PROTECTION OF POTABLE WATER (ftp://www.ilga.gov/JCAR/AdminCode/077/077008900I11300R.html), section f1 says I can use either a dual or double check valve assembly if the inlet is connected to a low hazard substance. Section f2 indicates I require a RPZ device for inlets connected to high hazard substances. Is storm water considered a low or high hazard substance? Section g2 concerning installation says I need shut-off valves at the inlet and outlet. Do these valves have to be built-in (like they are for double check valve assemblies), or can install separate shut-off valves. If the former, this seems to contradict the use of dual check valves mention in section f1. I am an educated DIYer trying to do the right thing and learn something in the process. Any help would be much appreciated!
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Author:
packy (MA)
in MA, when we install a heating boiler we are required to use a simple double check valve such as a watts 9D..
if we add non-toxic boiler antifreeze to the system we are required to use an RPZ device. they come assembled with shutoff on each end. so, they consider non-toxic antifreeze to be high hazard.
i'm gonna guess ground water is low level but you better ask...
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Author:
m & m (MD)
The Liberty SumpJet comes with its own backflow device. It is a dual check.
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