Why not use a pendent and seal the hole above the fusible element? Is the pendent a problem in the clean room such that you need the flat cover plate?
Pete -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Thom McMahon Sent: Wednesday, October 31, 2007 3:32 PM To: [email protected] Subject: Re: Clean room sprinkler heads w/ covers Actually many of these applications are such that were this option not available they would opt. to leave out protection, or have to install an expensive alternative system. This choice is usually made by the Arch/owner's rep. not the Sprinkler guy. Thom McMahon Firetech, Inc. 2560 Copper Ridge Dr Steamboat Springs, CO 80488-2136 Tel: 970-879-7952 Fax: 970-879-7926 ----- Original Message ----- From: "Ed Kramer" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Wednesday, October 31, 2007 2:03 PM Subject: RE: Clean room sprinkler heads w/ covers >I agree, George. And as long as owner, AHJ, insurance interests, judge & > jury agree, there is no issue. > > Ed Kramer > Littleton, CO > > >>The overriding concern is for cleanliness, in a HEPA filtered clean >>room/operating room environment. >>The application requirements for preventing foreign materials outweigh the >>requirement for QR, IMHO. >> >>The gap is for prewarming of the fusible link/glass bulb >> >>glc >> >>-----Original Message----- >>From: [EMAIL PROTECTED] >>[mailto:[EMAIL PROTECTED] On Behalf Of Ed Kramer >>Sent: Wednesday, October 31, 2007 2:22 PM >>To: [email protected] >>Subject: RE: Clean room sprinkler heads w/ covers >> >>It doesn't answer your question, but I noticed that for a least one of the >>manufacturers, if the air/dust seal is used, the sprinkler is no longer >>quick response. A bit of an issue in light hazard occupancies. >> >>Ed Kramer >>Littleton, CO >> >> >>>Interesting: The cut sheet on the sprinkler has the following in it: >>> >>>When properly installed, there is a >>>nominal 3/32 inch (2,4 mm) air gap >>>between the lip of the Cover Plate and >>>the ceiling, as shown in Figure 2. This >>>air gap is necessary for proper operation >>>of the sprinkler. >>> >>>They then go on to seal this gap with the air and dust seal. >>> >>>I was under the impression that the gap was critical for the proper >>>operation of the sprinkler, but this doesn't seem to be the case. This >>>same condition exists for the Reliable. >>> >>>Can someone explain why this gap is not required when the seal is >>>applied, but is required otherwise. >>> >>>Thanks >>> >>>Pete >>>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) > > > _______________________________________________ > 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) _______________________________________________ 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)
