John's right. You need a valve with a switch that is meant to be normally closed. I know Victaulic makes these and I suspect everyone else does also though I couldn't testify to that in sprinkler court.
On Mon, Feb 17, 2014 at 2:47 PM, John Denhardt <[email protected] > wrote: > Not allowed. Must pick up within two turns of normal position. We did it > your way for years but new valves are made that comply with the standard. > > Thanks, > John August Denhardt P.E. > > > On Feb 17, 2014, at 5:15 PM, "Forest Wilson Fire Sprinkler Contractor" < > [email protected]> wrote: > > > > Just Change it from NO to NC when you connect the contacts > > > > > > Forest Wilson > > Fire Sprinkler Contractor > > 937-736-0425 > > > > Notice: > > This message is confidential. It may also be privileged or otherwise > protected by work product immunity or other legal rules. If you have > received it by mistake, please let us know by e-mail reply and delete it > from your system; you may not copy this message or disclose its contents to > anyone. Please send us by fax any message containing deadlines as incoming > e-mails are not screened for response deadlines. The integrity and security > of this message cannot be guaranteed on the Internet. > > > > -------- Original message -------- > > From: John Denhardt <[email protected]> > > Date:02/17/2014 4:56 PM (GMT-05:00) > > To: [email protected] > > Subject: RE: Butterfly valve, monitered or not? > > > > Wait a second. > > > > It looks like the NFPA 20 committee cleaned this section up in 2013 and > now allows (thanks Chris for the post) > > > > (3) Locking valves open > > (4) Sealing of valves and approved weekly recorded inspection where > valves are located within fenced enclosures under the control of the owner. > > > > That makes more sense. We were locking them open for years. > > > > The point is that these control valves do not affect the system > operation. The worse that could happen is the piping or test header valves > would freeze and break. > > > > About three years ago, the industry (NIBCO and Victaulic that I remember > off the top of my head) have started providing normal closed butterfly > valves that are correctly supervised to operate within 2 turns from closed. > While these valves are available, they cost more than a normal butterfly > valve. > > > > John > > > > > > John August Denhardt, P.E., FSFPE > > Strickland Fire Protection Incorporated > > 5113 Berwyn Road > > College Park, Maryland 20740 > > Office Telephone Number: 301-474-1136 > > Mobile Telephone Number: 301-343-1457 > > FIRE SPRINKLERS SAVE LIVES - Can you live without them? > > > > > > -----Original Message----- > > From: [email protected] [mailto: > [email protected]] On Behalf Of > [email protected] > > Sent: Monday, February 17, 2014 4:44 PM > > To: [email protected] > > Subject: RE: Butterfly valve, monitered or not? > > > > Agreed. Most normally closed valves cause something else to happen when > opened (start a pump or dump a deluge system) and that something else is > usually alarmed.. > > > > Ron F > > > > -----Original Message----- > > From: [email protected] [mailto: > [email protected]] On Behalf Of John Denhardt > > Sent: Monday, February 17, 2014 2:21 PM > > To: [email protected] > > Subject: RE: Butterfly valve, monitered or not? > > > > Agree. However, this is similar to a fire pump test header control > valve. The NFPA 20 committee thought it was important enough to supervise > the fire pump test header valve. To me, this is a wasteful requirement but > it is a requirement. We need this requirement changed. > > > > John > > > > John August Denhardt, P.E., FSFPE > > Strickland Fire Protection Incorporated > > 5113 Berwyn Road > > College Park, Maryland 20740 > > Office Telephone Number: 301-474-1136 > > Mobile Telephone Number: 301-343-1457 > > FIRE SPRINKLERS SAVE LIVES - Can you live without them? > > > > > > -----Original Message----- > > From: [email protected] [mailto: > [email protected]] On Behalf Of Brad > Casterline > > Sent: Monday, February 17, 2014 4:07 PM > > To: [email protected] > > Subject: RE: Butterfly valve, monitered or not? > > > > Douglas, > > > > Search the archives for 'full forward flow test control valves'. > > lots of good stuff and fairly recent. > > brad > > > > -----Original Message----- > > From: Douglas Hicks [mailto:[email protected]] > > Sent: Monday, February 17, 2014 2:58 PM > > To: [email protected] > > Subject: Butterfly valve, monitered or not? > > > > I am going to install a 4" butterfly valve on a sprinkler manifold. > This will give us an outlet to perform a Forward Flow. Does the valve > need to be monitored or will it be OK to use a chain to lock the valve in > the closed > > position? > > _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > > > > _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > > _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > > > > > > _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > > _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > > _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > _______________________________________________ > Sprinklerforum mailing list > [email protected] > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > -- Ron Greenman Instructor Fire Protection Engineering Technology Bates Technical College 1101 So. Yakima Ave. Tacoma, WA 98405 [email protected] http://www.bates.ctc.edu/fireprotection/ 253.680.7346 253.576.9700 (cell) Member: ASEE, SFPE, ASCET, NFPA, AFSA, NFSA, AFAA, NIBS, WSAFM, WFC, WFSC They are happy men whose natures sort with their vocations. -Francis Bacon, essayist, philosopher, and statesman (1561-1626) A problem well stated is a problem half solved. -Charles F. Kettering, inventor and engineer (1876-1958) _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
