Anything wrong with this kitchen drain system?

Old 08-03-17, 12:16 PM
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Anything wrong with this kitchen drain system?

I checked and surprisingly nothing seems to be leaking. Is there anything wrong with this set up, especially the part with the two metal hose clamps.
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Old 08-03-17, 12:22 PM
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Yes, there are two things wrong. First is that is an "S" trap and they are no longer allowed by the plumbing codes as they have a tendency to siphon out the water seal under certain conditions. You need to have a vent and IF AAVs (automatic air vents) are allowed in your jurisdiction one can be added fairly easily.

The other problem is that rubber coupling. For use above ground they require a stainless steel shield to encircle the entire rubber portion in order to hold the two pipes straight. Unshielded rubber couplings may only be used underground where the earth prevents the pipes from shifting out of alignment.
Old 08-03-17, 12:28 PM
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What size is that galvanized drain pipe? looks kind of small.

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