you can also do an online search of the UL directory for listed
products.
Roland
On Mar 24, 2011, at 11:16 AM, Sean Lockyer wrote:
I have an odd situation that I have never seen before; I recently
did an
inspection in which we had a faulty air maintenance device (Tyco
AMD-1) and
the air maintenance device itself is 1/2" but the piping back to the
AMD to
the dry pipe valve was 1/4" (it was reduced down immediately from the
connection). Per the listing isn't the piping required to be a
minimum of
1/2" ? In addition, is there an code reference requiring the AMD
line to be
a minimum size ?
Lastly, there was another AMD for a model that I have heard of, it
is a
Parker Filtration Model RP FR-1004CSS. I searched high and low in
the land
of Google but could not find anything; the closest I found was an
Air Gap
that was for a different model number. I wonder if this is a type of
AMD but
is not actually listed for fire sprinkler use and that the problems
in the
dry system is not the valves or the other AMD but is in fact this
off-brand
type.
What says the community ?
--
Sean Lockyer
Project Designer
Delta Fire Sprinklers
(407) 328-3000, ext 139
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