Can't use ball valves per NFPA 24 (2002, Edition) 6.1.2 Indicating valves shall not close in less than 5 seconds when operated at maximum possible speed from the fully open position.
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: david.au...@nebraska.gov -----Original Message----- From: sprinklerforum-boun...@firesprinkler.org [mailto:sprinklerforum-boun...@firesprinkler.org] On Behalf Of Hinson, Ryan Sent: Wednesday, September 23, 2009 3:27 PM To: sprinklerforum@firesprinkler.org Subject: Post Indicators Does anyone know of a post indicator that can be used in conjunction with a 12" ball valve installed below grade? I've been trying to find one at the request of a customer for use as control valves for the underground firewater piping of an industrial facility. We've gone around and around ad nauseam but they don't want butterfly or gate valves because in their words they, "don't want to dig up the valve when it no longer seals". Ball valves that size normally require a ~3' long handle and show the handle almost directly fastened to the valve body itself. Gearboxes could be used at valve level, but I still need to extend the handle of the gearbox above grade in such a way as to indicate the valve position. Anyone out there with any experience with this scenario? Ryan L. Hinson, EIT, NICET III Fire Protection Systems Designer, Aviation and Facilities Group Minneapolis-St. Paul Office Burns & McDonnell 8201 Norman Center Drive, Suite 300 Bloomington, MN 55437 Direct: 952-656-6003 Ext 3662 Fax: 952-229-2923 www.burnsmcd.com <BLOCKED::www.burnsmcd.com> Proud to be one of FORTUNE's 100 Best Companies To Work For _______________________________________________ Sprinklerforum mailing list Sprinklerforum@firesprinkler.org http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: supp...@firesprinkler.org To Unsubscribe, send an email to:sprinklerforum-requ...@firesprinkler.org (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list Sprinklerforum@firesprinkler.org http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: supp...@firesprinkler.org To Unsubscribe, send an email to:sprinklerforum-requ...@firesprinkler.org (Put the word unsubscribe in the subject field)
