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
