Looped sink vent

[tpetersen]

Other than this being an "S" trap any thoughts about the loop?

[Terry Clayton]

common with free standing kitchen island sink installation, don't see much ABS around here

[tpetersen]

I did drain quickly, but it's still an "S" trap.

[Mark Thorman]

I would not call that an S-trap. Just a poor (failed) attempt at a proper island sink vent loop.

www.MauiHomeInspections.com

[Michael Larson]

No S-trap in a properly vented island

[Terry Clayton]

Very Nice graphics Mr. Larson

[Blaine Wiley]

Why do you call that an "S" trap?

Sure would have been easier to use a Studor vent.

[dhelm]

Would certainly have been easier to use a Studor, more properly called an air admittance valve, but they are not allowed in some jurisdictions. They also need to be monitored over time because the seals will eventually fail.

[Blaine Wiley]

Originally Posted by dhelm

Would certainly have been easier to use a Studor, more properly called an air admittance valve, but they are not allowed in some jurisdictions.

AAV's are allowed here, use frequently in island kitchens, and are commonly referred to as "Studors" or "Cheater vents".

[Jeffrey R. Pope]

Originally Posted by bwiley

AAV's are allowed here, use frequently in island kitchens, and are commonly referred to as "Studors" or "Cheater vents".

Not allowed in most CA jurisdictions either. . .