You DO understand the cost of the path ahead of you, especially when you're trying to get fire tests done? There is a large item you may have missed: Economic feasibility Since I'd guess there is but a small number of these sprinklers that would be sold in a year.
Various manufacturers have their own little "Edsels" that they invested R&D $ into, but aren't getting the return for them. Even when times are good, they are prudent about what they invest in, and I'm not certain that saving a couple PSI is one of them. If they have enough water to make the plumbing work, they've got 7 PSI up to a certain flow. But for the cost required to get the listing done and the sprinkler on the market, you'd prolly need a quantum change in the min EHP, not 2 PSI. It would look better as a % saved (save 28% of your EHP!) but when it comes right down to it, its 20% of what we generally leave as a throwaway cushion. I have had a lot of ideas I scrapped quickly because of the risk/reward economic viability measure. At one time, folks were putting up bar joists with the chords made of pipe so we could connect and use them as our sprinkler system, I believe in the 80's. Obviously, that idea's time hasn't come (yet). We see very few commercial multipurpose systems, despite what appears at first to be great cost savings. I keep a pad of paper and a pencil in the drawer of my nightstand. I don't remember the last time I awoke with an idea great enough to write down, but maybe I just sleep better than I used to. Or I've grown to appreciate rolling over and going back to sleep. George L. Church, Jr., CET Rowe Sprinkler Systems, Inc. PO Box 407, Middleburg, PA 17842 877-324-ROWE 570-837-6335 fax [email protected] -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Brad Casterline Sent: Monday, June 04, 2012 11:56 AM To: [email protected] Subject: RE: 7psi Minimums for Fire Sprinklers If in doubt about the Pt available to a non-flowing head when others are flowing, couldn't we use a flow test graph to find GPM at 7 PSI, and make sure we are flowing less than that? Ron, the above is another excerpt from the original post. in most cases we have what, 30, 50, 100 PSI available to eject all the link parts clear of the frame and deflector? What I will be proposing will further simply sprinklers, whether you can see it or not. And no one can talk me out of trying to improve NFPA #13. I might not get it done, but I'm sure the younger generation will not be satisfied with the HISTORY ONLY of our generation. _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
