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View Full Version : Plumbing trap connection


k3lkn
May 26, 2014, 05:01 AM
I realize that S traps are illegal. However, I have a sink, going into an existing home, that does not have discharge access within the exterior wall. But it does have access for the vent up into the attic. Can I use an S trap and connect the vent after the trap or must I attempt to keep the P trap and associated piping within the cabinet and still maintain the required distance between the trap discharge and the connection to the vent?