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)
