, 2012 3:13 PM
To: FORUM
Subject: RE: 20 PSI Minimum
The requirement is part of the Clean Water Act and has been mandated as part of
Federal Law. It is adopted and enforced by every US State's EPA (or
equivalent). You can draw the pressure in potable water supplies below 20 psi
but then you must
Hello Timothy,
This is the first post I've seen on 20 psi minimum. Can you give me more
details on this?
Thanks,
Owen Evans
-Original Message-
From: Timothy W Goins tgo...@rgv.rr.com
To: sprinklerforum sprinklerforum@firesprinkler.org
Sent: Mon, Nov 12, 2012 9:23 am
Subject: 20 PSI
I'd say they want the Fire Sprinklers to SHUT-OFF if the City water drops
below 20 psi.
They must consider back-siphonage into the CIty Water system more dangerous
than
the fire that is NOT getting water poured on it from Sprinklers.
I wonder if the Fire Dept. has the same instructions?
Jeff
[mailto:sprinklerforum-boun...@firesprinkler.org] On Behalf Of Owen Evans
Sent: Monday, November 12, 2012 12:34 PM
To: sprinklerforum@firesprinkler.org
Subject: Re: 20 PSI Minimum
Hello Timothy,
This is the first post I've seen on 20 psi minimum. Can you give me more
details on this?
Thanks,
Owen
...@firesprinkler.org] On Behalf Of Jeff Garrison
Sent: Monday, November 12, 2012 12:44 PM
To: sprinklerforum@firesprinkler.org
Subject: Re: 20 PSI Minimum
I'd say they want the Fire Sprinklers to SHUT-OFF if the City water drops
below 20 psi.
They must consider back-siphonage into the CIty Water system
This is poorly worded for one thing.
Typically the mandate of reduction of flow to fire sprinkler systems when the
municipal supply pressure falls to or below 20 psi is a requirement of the
local water purveyor. This doesn't always result in the water supply being
completely shut off, it can
Church
Sent: Monday, November 12, 2012 10:51 AM
To: sprinklerforum@firesprinkler.org
Subject: RE: 20 PSI Minimum
Are we talking a low suction cut-off, but of the supply NOT suction to a pump?
I suppose the water co wouldn't want the pressure to go below 20, but it flies
in the face of all we stand
-boun...@firesprinkler.org] On Behalf Of
mphe...@aerofire.com
Sent: Monday, November 12, 2012 12:56 PM
To: sprinklerforum@firesprinkler.org
Subject: RE: 20 PSI Minimum
So in this situation, should the responding fire company stop boosting the FDC
from a hydrant at 19 PSI? None that I know would
Subject: RE: 20 PSI Minimum
If the water department mandate is to not allow the municipal supply to drop
below 20 psi the FD has no choice but to comply and bring in tankers if
necessary. This was the plan for a project we had about three years ago where
this very requirement was in place
Sent: Monday, November 12, 2012 12:14 PM
To: sprinklerforum@firesprinkler.org
Subject: RE: 20 PSI Minimum
If the water department mandate is to not allow the municipal supply to drop
below 20 psi the FD has no choice but to comply and bring in tankers if
necessary. This was the plan for a project
Champaign, IL
217.607.0325
www.sprinkleracademy.com
ce...@sprinkleracademy.com
OUR STUDENTS SAVE LIVES!!
From: g...@rowesprinkler.com
To: sprinklerforum@firesprinkler.org
Date: Mon, 12 Nov 2012 14:20:48 -0500
Subject: RE: 20 PSI Minimum
The surprise comes to those of us on the outside who
: sprinklerforum-boun...@firesprinkler.org
[mailto:sprinklerforum-boun...@firesprinkler.org] On Behalf Of Sprinkler
Academy - C Bilbo
Sent: Monday, November 12, 2012 2:13 PM
To: FORUM
Subject: RE: 20 PSI Minimum
The requirement is part of the Clean Water Act and has been mandated as part
@firesprinkler.org
Date: Mon, 12 Nov 2012 15:14:43 -0600
Subject: RE: 20 PSI Minimum
And don't forget the pressure at the inlet is not the pressure in the system.
These parts just in pipe bury there is about 3 psi extra in the main from
elevation. A little friction loss and things aren't as bad
Sent: Monday, November 12, 2012 11:52 AM
To: sprinklerforum@firesprinkler.org
Subject: RE: 20 PSI Minimum
I read it to mean that they do not want the design flow of the sprinklers to
draw the municipal water service below 20 PSI, this happens quite often with
pump installs.
Regards,
Jamey
-
From: sprinklerforum-boun...@firesprinkler.org
[mailto:sprinklerforum-boun...@firesprinkler.org] On Behalf Of Timothy W Goins
Sent: Monday, November 12, 2012 5:06 PM
To: sprinklerforum@firesprinkler.org
Subject: RE: 20 PSI Minimum
Thanks to all for your comments...
Systems are to protect
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