Reliability, listings, engineering and limited demand all factor into the price.
Neither UL nor FM had a standard for air vents used on fire sprinkler mains and branch lines. The only standard was for fire pumps. Potter commissioned and paid UL to write a standard for vents for fire sprinkler mains and branchlines, UL2573. The vents that were listed and approved for fire pumps do not meet the UL standard for branch line vents. We spent over 2 years testing and researching vents until we found one that would meet the requirements and then another year for the actual approval process. We just received UL listing for the only vent approved for branch lines. FM still does not have a standard for this, they still only approve for use on fire pumps despite what some other company may advertise. Potter is trying to get FM to also create a standard for branchlines but they have not. It's going to take a long time and a lot of sales to recoup our expenses on this and I am reminded of that frequently by the people above me. This is not an advertisement; I'm just answering a question. Regards, mike Mike Henke CET Sprinkler Product Manager 1-800-325-3936 314-595-6740 Direct www.pottersignal.com -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Matthew J. Willis Sent: Thursday, June 24, 2010 10:09 AM To: [email protected] Subject: RE: Automatic air release >The device looks > >pretty simple why so expensive? Reliability? Listing? Matthew J. Willis, CET Automatic Fire Sprinklers Norred Fire Systems L.L.C. 318-387-1134 Voice 318-816-1087 Mobile 318-387-1163 Facsimile [email protected] _______________________________________________ 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)
