Hello Jay, I had the same thing happening here on a large gridded system that was improperly itched. Found lots of trapped air was causing this.
Wednesday, February 20, 2013, 6:55:16 AM, you wrote: > We have a wet system that is having problems with the flow switch. > The flow switch would send a signal and then stop and then send > another signal. This would be happening intermittently. We figured > the flow switch diaphram was bad and then replaced the flow switch > with the same results. The main drain test is 60 psi with 50 psi > residual. The inspector's test was a globe valve that would flow > water intermittantly; so we changed it to a ball valve. It flows > water continuously now with the same problem with the flow switch. > We checked the vane on the flow switch and the pipe is clean, so > it's not hanging up at the riser. Any suggestions? > > Jay Stough > Tilley fire Equipment Co. > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > <http://fireball.firesprinkler.org/mailman/private/sprinklerforum/attachments/20130220/d61c272e/attachment.html> > _______________________________________________ > Sprinklerforum mailing list > Sprinklerforum@firesprinkler.org > http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum -- Best regards, Charles mailto:charl...@mbfsg.com _______________________________________________ Sprinklerforum mailing list Sprinklerforum@firesprinkler.org http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum
