How does the current water pressure compare to previous tests? It may not be a valve issue but more of a water supply issue.
Also have there been any changes to the piping system since last tested? How old is the system? When was it internally inspected to assure there is no scaling or other buildup inside the pipes that could hamper water flow? There are a lot of issues to resolve before placing Craig L. Prahl, CET Fire Protection Specialist Mechanical Department CH2MHILL Lockwood Greene 1500 International Drive PO Box 491, Spartanburg, SC 29304-0491 Direct - 864.599.4102 Fax - 864.599.8439 [email protected] http://www.ch2m.com -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Frans Stoop Sent: Tuesday, April 28, 2009 9:25 PM To: [email protected] Subject: Slow responding dry pipe valves 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 _______________________________________________ Sprinklerforum mailing list http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
