I'd say the annex material in NFPA 13 2010 A.8.17.4.2 suggesting locating wet system test connections at the riser to eliminate the introduction of air into the system would be one reason to believe they may be on to something. They aren't the only company moving in this direction. Also we've had some alarm issues on a particular building we service and several manufacturers who have no stake in the "air vent" business immediately suggested trapped air was a concern. The installation of air vents has dropped the alarm test time from about 1 minute to about 30 seconds... On a system with large sections of trapped piping at least, they're definitely worth looking at. Mike Morey, SET, CFPS Sprinkler Designer BMW Constructors, Inc. O: 317.651.0596 | C: 317.439.2695 www.bmwc.com
________________________________ From: [email protected] on behalf of [email protected] Sent: Fri 4/15/2011 1:24 PM To: [email protected] Subject: Automatic Air Vents What is the forum's opinion in regard to the Potter Air Vent and Automatic Air Release that they are hawking to preserve wet pipe sprinkler systems by venting the trapped air at the top of the systems? Their website is http://www.pottersignal.com/news_sprinkler_PAVPAARB.aspx. I don't see the value. Thank You Rahe Loftin, P.E. Region 7 - GSA Cell - 817-371-3102 _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.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 [email protected] http://fireball.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)
