In the tripped mode the water would be flowing out the alarm line to the bell or pressure switch. The clapper would be in the latched position. If the clapper is not latched and is on the seat the water column probably would prevent it from operating. This could be a dangerous situation. In the south some plants like to take the clapper out and leave the system wet in the summer but I am not sure how they handled the alarm. In Europe they use wet/dry valve systems that are trimmed to allow the system to be alternated wet or dry depending on the season.
Michael L. Brown Manager of Technical Services The Reliable Automatic Sprinkler Company, Inc.' [EMAIL PROTECTED] www.reliablesprinkler.com (864) 843-5228 -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Larrimer, Peter A Sent: Wednesday, March 19, 2008 4:08 PM To: [email protected] Subject: Dry Pipe Valve going wet 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 _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
