Not in NFPA 25. The most important challenge is ensuring the servicemen replace with the same K factor.
-----Original Message----- From: Jay Jay Blocker <[email protected]> To: [email protected] Sent: Tue, 7 Jul 2009 20:58:40 -0700 (PDT) Subject: Heads As far back as the days of apprenticeship I have been told that if you pull a head out to replace the pipe you only install heads made in the same year as the work. But I can not seem to remember where it was written. Is this true or is it just one of those trade rules? JB _______________________________________________ Sprinklerforum mailing list http://lists.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 http://lists.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)
