Well now, that may be though I would tend to be skeptical of that, I usually mount the flow indicator high on the main riser anyway unless I am using an AGF drain/test valve.
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ron Greenman Sent: Friday, February 09, 2007 11:23 AM To: [email protected] Subject: Re: WATERFLOW SWITCHES Since you can only use a vane switch in a wet pipe, and since there is no sudden inrush I think the concern was more with being too close to the main drain where there would be a sudden pressure drop that could pull the vane backwards, either damaging the mechanism or pulling the vane off the shaft. On 2/9/07, George Church <[EMAIL PROTECTED]> wrote: > Sure you weren't thinking of a DPV or deluge? > > There's not a sudden inrush of water above a Alarm check. > > glc > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Bill > Minkel > Sent: Thursday, February 08, 2007 6:39 PM > To: [email protected] > Subject: RE: WATERFLOW SWITCHES > > I have been told that when the flow switch is too close to an alarm > valve the sudden flow can damage or tear off the vane. Just what I was > told once, notta clue if it's a valid concern > > > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > -- Ron Greenman at home.... _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum
