As far as I can tell, this is driven by the head backflow guy at the WP. He says that the metals etc that leach out of steel sprinkler piping will eventually foul the RPZ and cause it to fail. How about you backflow manufacturers and suppliers. Is there any basis for that belief???
Mike Wisneski _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
