Do the systems have separate shut off valves?
Bruce Verhei
----- Original Message -----
From: "Forest Wilson" <[email protected]>
To: [email protected]
Sent: Sunday, March 8, 2009 6:15:53 PM GMT -08:00 US/Canada Pacific
Subject: Re: relief valve on gridded system
I'm sorry the other system is about 45,000 sq ft .... 90,000 total for both.
Why do I need the relief valve if there is no check valve between the two
systems? ------Original Message------ From: Rod DiBona Sender:
[email protected] To: [email protected]
ReplyTo: [email protected] Subject: RE: relief valve on gridded
system Sent: Mar 8, 2009 8:42 PM I think the relief valve is needed and I also
think that you need another system....90,000 ft on the second? Rod DiBona Rapid
Fire -----Original Message----- From: [email protected]
[mailto:[email protected]] On Behalf Of Forest Wilson
Sent: Sunday, March 08, 2009 12:44 PM To: [email protected]
Subject: relief valve on gridded system We have a building with two wet systems
fed from same riser manifold. There is a detector check valve on the manifold.
The two wet systems do not have their own check valves. One of the systems is
gridded protecting about 45,000 sq ft. The other system is not gridded,
protecting about 90,000 sq ft. Am I correct in assuming that a relief valve is
not needed because the pressure will equalize between the two systems? The
risers indicate the same pressure. Forest Wilson Cherokee Fire Pro. Sent from
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