I'm not an expert on code but I believe that as long as there's a P-trap in the line between the drain and the main sewer lines in the house, it's OK.

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-Evan


Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63


Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250