If I may comment: rpz should not be installed below ground level. It all
depends on the mfr approvals. Some states follow asse some follow ucc. The
listings between these two often differ.
For fire sprinkler systems they should all have an rpz asse 1013 if they have a
fdc.
A good resource is the American backflow prevention association website.
Forest Wilson
Cherokee fire protection
------Original Message------
From: Garth W. Warren
Sender: [EMAIL PROTECTED]
To: [email protected]
ReplyTo: [email protected]
Subject: backflow preventer drains
Sent: Aug 25, 2008 9:10 PM
(All rooms containing a backflow preventer are required to
> have a drain and a relief drain.)
Thom - Could you give a reference for this requirement? I know there are
requirements for RPZ installed below ground level. I have seen three
buildings that were flooded by RPZ above ground installations where the
water had no place to go. Is this requirement for DCVs as well?
Thanks,
Garth
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