I like it! I would give them everything they are willing to pay for that
doesn't degrade the system. Have you suggested a two story pump room
with redundant pumps and you could use 11.2K heads instead of 5.6K. What
about a tandem gear drive to open and close the butterfly valves in the
risers simultaneously? And don't get me started about the benefit of
side outlet crosses at each sprinkler so the lines can go both
directions.

Ron Fletcher
Aero Automatic
Phoenix, AZ

 

-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Davis,
Adam
Sent: Wednesday, April 11, 2007 12:58 PM
To: [email protected]
Subject: Duplicate run-in

I have a client that wants a duplicate run-in.  What I mean is two
parallel run-ins, each with a PIV going to serve the same sprinkler
riser.  I have never done this before and I know FM (insured) and NFPA
do not advocate this kind of arrangement.  Has this ever been done
before and if so why?  I am trying to respond that I don't think it is a
worth while investment to "ensure" continuous water supply. 

 

Thank you, 

 

Adam Davis

Mechanical Engineer

 

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