Is it alright to use standard grv cplgs on a manual dry standpipe for a parking garage instead of the "tri-seal" type made by Tyco? I have a fitter that is worried that water will be left in the std cplg after testing that may freeze. What did they do in the old days before Tri-seal cplgs? Thanks, Dewayne _______________________________________________ Sprinklerforum mailing list http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [EMAIL PROTECTED]
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