Basically it is to see if you have pressure on the system side of the valve(s) indicating the system is under pressure and what that is....for inspection and maintenance and such On Fri, Mar 5, 2010 at 3:48 PM, <[email protected]> wrote:
> For discussion - > > NFPA 13, 2007 states the following: > "8.17.3.1 A pressure gauge with a connection not smaller than 1⁄4 in. (6 > mm) shall be installed at the system main drain, at each main drain > associated with a floor control valve, and on the inlet and outlet side of > each pressure-reducing valve." This has been in NFPA 13 for some time. > > It is difficult to reason what the use is of the floor control assembly > gauge. Some things have occurred to me. One, since the gauge on the > floor control assembly is installed past the required check valve, the > gauge is not indicating the static pressure on the standpipe side of the > gauge and the residual pressure would only be indicated for the flow > through either the drain or inspector's test pipe. This does not appear to > me to provide any useful information on the sprinkler system, flows, or > pressures especially since the pressure drop recorded is not accurate > because the gauge is not reading the standpipe pressure. Two, this > especially seems to be a problem with a fire pump. > > Can someone explain to me the usefulness of these gauges installed on each > floor control assembly? > > Thank You > > Rahe Loftin, P.E. > Region 7 - GSA > Office - 817-978-7299 > Fax - 817-978-8644 > Cell - 817-371-3102 > _______________________________________________ > 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]<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)
