I believe you are correct Forest, but the key is what are you comparing
it to.
What has the time been in the past?
What is the trip time?
What is the water pressure?
What is the air pressure?
How old is the system?
Forest Wilson wrote:
I believe that Tyco has information on their website implying that higher air pressure in dry systems results in faster exhaustion of the air.
But when you state that the time of water to Inspectors Test is too slow, was this the result of annual inspection? Because my understanding is that annual trip test is not intended to require 1 min response time, but only to measure response time and compare to previous years?
Perhaps adding an Exhauster would help?
Forest Wilson
Cherokee Fire
------Original Message------
From: Frans Stoop
Sender: [email protected]
To: [email protected]
ReplyTo: [email protected]
Subject: Slow responding dry pipe valves
Sent: Apr 28, 2009 9:24 PM
Dear colleagues,
Our client has a rather large dry pipe system supplied by a Victaulic
dry pipe valve complete with an accelerator.
The system responds to slow to the ITC: more than 3 minutes.
The contents of the system is approx. 1300 gallon.
The air pressure in the system was set lower (in compliance with the
Victaulic installation sheets) than we are used to with dry pipe
valves of other manufacturers.
The sprinkler contractor and the local Victaulic representative
couldn't find the cause yet.
My personal impression is that the Victaulic mat take much more time
between opening the test valve and water delivery than dry pipe
valves of other brands.
Does anyone share this impression or had the same experience ? If you
prefer, you may react off-forum.
Frans Stoop
TOS architecture & fire protection
Netherlands <[email protected]>
Tel. +31-24-324 0112
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Forest Wilson
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org:Fire Technology LLC;Fire Sprinkler Division
adr;dom:;;2005 Westside Drive;Augusta ;GA;30907
email;internet:[email protected]
title:Project Manager
tel;work:706-650-7730
tel;fax:706-650-7731
tel;cell:706-951-7563
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