Oat meals a new one for me, we used to use a sheet of news print (Not
Glossy) with the center cut out. Never had one stick, but it always seemed
to seal first time.
Thom McMahon
Firetech, Inc.
2560 Copper Ridge Dr
Steamboat Springs, CO 80488-2136
Tel: 970-879-7952
Fax: 970-879-7926
----- Original Message -----
From: "Tom Duross" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Wednesday, March 19, 2008 5:10 PM
Subject: RE: Dry Pipe Valve going wet
If all this is because a DPV won't seat, try plain old oatmeal.
A handful around the clapper, prime it and it works every time.
An old timer taught me this and it's never failed.
The oatmeal will dilute should the valve ever trip and with all that
water,
be negligible.
As far as the water column, you're right but it would be a tall column.
Just 10' @ .434 would give you 4 PSI against the air side, that would hold
back 20 PSI on a 5-1 DPV.
Tom
If you're talking about paddle or vane type flow switches these are only
allowed in wet systems. In fact since NFPA actually defines accepted types
of systems and a wet/dry combination (I'm not talking about an auxiliary
dry
off a wet but one that is both things) is not mentioned then I'd say can't
do it at all since this is not a case of if it's not addressed it's OK. Of
course if a temporary course of action is to leave an ordinarily dry
system
wet without an alarm while repair parts were being ordered or shut it off
I'd certainly opt for the former.
On Wed, Mar 19, 2008 at 3:21 PM, Ed Vining <[EMAIL PROTECTED]> wrote:
What about the alarm Pete? The valve to the WMG or pressure switch
must be turned off after the DPV trips. One could add a waterflow
indicator and pretend it is a shotgun riser.
Ed
On Wed, Mar 19, 2008 at 1:07 PM, Larrimer, Peter A
<[EMAIL PROTECTED]> wrote:
> Forum Members:
>
> If a dry pipe valve trips and "goes wet", is there any reason why you
> couldn't leave the system piping filled with water assuming that the
> weather is not cold enough to freeze it? I am assuming that the
> clappers have been reset externally and that the alarm connections
> remain dry since they don't seem to be having problems at this time.
>
> Why would they want to use an alarm valve in place in liew of just
> leaving the dry pipe valve?
>
> Thanks in advance.
>
> Peter Larrimer
> VA
>
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