Reply To: P trap for dishwasher?

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PLUMBILL

Our State Plumbing Code use to require air-gap’s but has been up dated almost like Illinois to permit air-breaks for the dishwasher drain hose and no cases of backflow have been reported since change.

We use to require 2″ vents for water closets but we up dated to permit 1 1/2″ for two water closets. Does UPC Code still require 2″?

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