Dave, I didn't think the F-300 dries went that far back.All the forties stuff I remember were E-2 models. If the latter the big problem is the brass on brass inner seat. They are robust though and last a long time even with poor maintenance. They are 6:1 if I recall but are very sensitive in high water pressure situations. If it is anD-300 model from the forties it's a different series than i'm thinking of and I'll be of no help.
[email protected] Sent from my iPhone Ron Greenman ...On the phone On Sep 12, 2009, at 2:46 PM, "Dave Phelan" <[email protected]> wrote: > Greetings to all - > > > > I am working on a project with several 1940 era Grinnell F-300 DPV's > - 4 > inch. One of the many issues with these systems is the incorrect air > settings from the supplied air system and lack of proper air > maintenance > devices. Does anyone have a table or air pressure / trip point > information > on these valves? > > > > The systems are holding back a fire pump which develops 180 PSI at > churn and > maintains 125 PSI via the jockey pump. Currently they are providing > up to > 80 PSI of air in the systems .. Did I mention there were some > problems with > this project ? > > > > > > Dave P. > > An AHJ in NJ > > _______________________________________________ > 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:Sprinklerforum- > [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)
