Ron, 1. Waiting on answer from mfg. 2. I'm asuming (their's that word again) it for vibration and/or tank settling. 3. Tank is only for Fire Protection 4. Metraflex was just one of the ideas floated in the office.
At one of the casinos in Mississippi we used 4 unlisted ball joints, even with all that if the water rose over 12' they had to close the casino and disconnect the umbilical's for all the utilities. ----- Original Message ----- From: "Ron Greenman" <[email protected]> To: <[email protected]>; "Richard Mote" <[email protected]> Sent: Tuesday, December 29, 2009 1:31 PM Subject: Re: Flexible Couplings Richard, 1. Why not ask the tank manufacturer exactly what they mean? 2. How much deflection do they want? 3. Is the tank solely for fire protection? The well itself is essentially a break tank and so you could argue that the FRP tank is not a exclusive part of the fire system. I'm thinking about that "listed parts" thingie. 4. If the Metraflex type connection is what the tank guys want maybe you can get metraflex to make you a short, straight piece. This kind of reminds me of the floating dock problem. On Tue, Dec 29, 2009 at 10:26 AM, Richard Mote <[email protected]> wrote: > Help! can someone point me in the right direction? > I am currently designing a Vertical Turbine fire pump, this is going to > set in a 42" dia. x 16' deep FRP wet well, this is being supplied from a > 15,000 gallon buried FRP tank. The tank mfg calls for a flexible coupling > at the point the underground piping connects to both the wet well and the > tank. I am assuming (yea I know) that they don't mean groove flexible > couplings. I remember using some corrugated flex couplings on a similar > wet well situation on one of my first jobs (about 30 years ago) but I > can't seem to find anything like that now. I don't want to use the > Metraflex because of the friction loss. The wet well is gravity fed > through 50' +/- 6" DI cl 52. > > Richard Mote ET > Designer > Rowe Sprinkler Systems, Inc. > _______________________________________________ > 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) > -- Ron Greenman Instructor Fire Protection Engineering Bates Technical College Tacoma, WA Member: SFPE, ASCET, NFPA, AFSA, NFSA AFAA, WSAFM _______________________________________________ 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)
