We know the valves are for testing the solution, but why are there 2 valves? One can also test through the drain valve in the illustration, which makes more sense because the drain valve is on the anti-freeze side of the check valve. Also, look at the 2010 edition, 7.6.3.3 and 7.6.3.4: Where is the provision for forward flow testing of the backflow valve?
Forest Wilson Project Manager Cherokee Fire Protection Co. 1855 Bellbrook Ave Ste C Xenia OH 45385 PH 937-376-2333 FX 614-455-4324 visit our blog: www.cherokee-fire.blogspot.com NOTICE: The information contained in this email is intended to be solely for the use of the named individual or entity to which it is directed and may contain information that is privileged or otherwise confidential. It is not intended for transmission to, or receipt by, anyone other than the named addressee (or a person authorized to deliver it to the named addressee). It should not be copied or forwarded to any unauthorized persons. If you have received this electronic mail transmission in error, please delete it from your system without copying or forwarding it, and notify the sender of the error by reply email or by calling Cherokee Fire Protection Co. at 888-347-3079 toll free. -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Autry, David Sent: Thursday, June 10, 2010 1:30 PM To: [email protected] Subject: RE: Figure 4-5.3.1 1999 NFPA 13 Valves for sampling/testing of the solution. David Autry Plans Examiner Nebraska State Fire Marshal's Office 246 S. 14th Street Lincoln, NE 68508 402-471-9659 402-471-3118 fax www.sfm.ne.gov ** Note new email address: [email protected] -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Smith, Steven D. (CSFD) Sent: Thursday, June 10, 2010 11:44 AM To: AFSA SprinklerFORUM Subject: Figure 4-5.3.1 1999 NFPA 13 This will most likely be a stupid question, but what are the two valves (A and B) shown in the diagram used for? The 1999 NFPA 13 Handbook didn't provide any information. Thank you. Steve _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.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 [email protected] http://fireball.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 [email protected] http://fireball.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)
