How to vent city sewer lines?
I have a restaurant on the high side of a shopping center. We have installed odor hogs on everyvent as well as gaskets on the grease trap lids. Wax rings were replaced on all water closets. The building has been power smoked four times. We are eliminating negative pressure at this time. Someone mentioned an item called "trap master." Can someone tell me anything about this and can I get other suggestions. We are on the end of the sanitary line from the shopping center.
Thanks,
A