"The fire is going to activate any head" is a poor argument when considering the listing requirements of SR vs QR in the plunge test. The "plunge test" is an oven that has hot air circulating through it. The sprinkler is placed in a panel of the oven and "plunged" into the hot air. The QR sprinkler must activate in 14 seconds. The SR sprinkler has an astounding 100 seconds to activate when you do this test. These are UL requirements and FM varies a bit. It is amazing how much the mass of the element matters here. But if you can't see an improved life safety factor when sprinklers will activate that much sooner, there is no use continuing the discussion.
As for me and my house, we have QR and residential heads installed to protect us while visions of sugarplums dance in our heads. Fortunately we had the opportunity to upgrade since one of our suppliers offers us the evolving continuum of new technology as it becomes available :) Have a firesafe and enjoyable Holiday, all ! George Church Rowe Sprinkler -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Thom McMahon Sent: Thursday, December 21, 2006 12:10 PM To: [email protected] Subject: Re: both QR & SR sprinklers Craig: Take in a Residential fire Demo Trailer next chance you get! Volunteer to be inside, you'll then know what we're talking about. Thom McMahon Firetech, Inc. 2560 Copper Ridge Dr Steamboat Springs, CO 80488-2136 Tel: 970-879-7952 Fax: 970-879-7926 ----- Original Message ----- From: <[EMAIL PROTECTED]> To: <[email protected]> Sent: Thursday, December 21, 2006 9:28 AM Subject: RE: both QR & SR sprinklers Chris, I'll take your word for it. (Although I'm a bit disturbed at you and Matt's repeated setting of things on fire.) LOL _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum
