We used restricted unions with 3/32" holes. Mike
> Subject: Re: Water Hammer Problem > From: [email protected] > Date: Tue, 6 Nov 2012 15:24:36 -0500 > To: [email protected] > > Are the two checks with with small holes present in the sensing lines, might > solve your problem. See NFPA 20 for suggested arrangement > > Regards, > Jamey > > On 2012-11-06, at 2:52 PM, Mike Hairfield <[email protected]> wrote: > > > > > > > I have a dry system fed by a booster pump that takes suction off of a > > pumped well system > > feeding a plant. > > > > The darn dry pipe valve keeps tripping and my thoughts are that when the > > plant well pumps > > shut off it's sending a water hammer into the fire pump suction line. > > > > I believe the water hammer is causing the pump sensing line to act erratic > > causing the pump to run thus > > tripping the dry pipe valve. > > > > Anyone have any suggestions about how to fix my problem, a expansion tank > > or water hammer arrestor > > comes to mind. > > > > Thanks, > > > > Mike Hairfield > > > > > > -------------- next part -------------- > > An HTML attachment was scrubbed... > > URL: > > <http://fireball.firesprinkler.org/mailman/private/sprinklerforum/attachments/20121106/3f3e2708/attachment.html> > > _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum > > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://fireball.firesprinkler.org/mailman/private/sprinklerforum/attachments/20121106/eb61a0c1/attachment.html> _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
