I have a customer with a commercial building where the toilets back up frequently. There is not quite enough fall for the 3" line to have been installed properly ie: some t's and 90's laying down because the exit pipe enters building too high. Every few months or so I am called to unclogg the line, wich has only some toilet paper hung up blocking the flow. Would a pressurized flush toilet flush with more force to help overcome the problem?
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