It is going to be in the book for the type pipe you are using. The cure times are listed, but there is an area in most of them for reno's to existing plastic. I can't remember seeing 24 hours before. I think that is just a standard SOP for most companies. Watch the Temp changes because after a certain temp, you can't even work with plastic until you bring the room to a minimum temp.
Matt Matthew J. Willis Living Water Fire Protection, LLC. 1160 McKenzie Rd. PO Box 877 Cantonment, FL. 32533 850-937-1850 Voice 850-937-1852 Facsimile [EMAIL PROTECTED] ----- >-----Original Message----- ----- >From: [EMAIL PROTECTED] ----- >[mailto:[EMAIL PROTECTED] On ----- >Behalf Of Chris Cahill ----- >Sent: Friday, October 19, 2007 2:05 PM ----- >To: [email protected] ----- >Subject: Plastic cure times ----- > ----- >We don't do a lot of plastic work and what little we do ----- >is new work. We ----- >seem to recall we're supposed to allow the glue to cure ----- >for 24 hrs before returning an existing system to ----- >service. Even longer for 2" and larger. ----- >But when we look at 2 different manufactures recommended ----- >guidelines they don't match our memory. We can go 1.5 ----- >hours for 1" and 8 hours for 2" and up for brand A and ----- >30 minutes up to 2" and 1.5 hrs for larger for brand B. ----- >Has the glue changed that much the 24 hrs is no longer ----- >valid? Has our memory just failed and it never was 24 ----- >hrs? Does the 24 hrs. come from some other source? ----- >What are some of your policies on modifying existing CPVC? ----- > ----- > ----- > ----- > ----- > ----- >Chris Cahill, P.E. ----- > ----- >Fire Protection Engineer ----- > ----- >Sentry Fire Protection, Inc. ----- > ----- > ----- > ----- >763-658-4483 ----- > ----- >763-658-4921 fax ----- > ----- > ----- > ----- >Email: [EMAIL PROTECTED] ----- > ----- > ----- > ----- >Mail: P.O. Box 69 ----- > ----- > Waverly, MN 55390 ----- > ----- > ----- > ----- >Location: 4439 Hwy 12 SW ----- > ----- > Waverly, MN 55390 ----- > ----- > ----- > ----- >_______________________________________________ ----- >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)
