8 feet Click to see full answer. Correspondingly, how far should a vent be from a trap?trap, the distance from the weir of the trap to the vent pipe opening “shall not” exceed 30 inches.Subsequently, question is, where should a plumbing vent be located? Plumbing air vents also prevent sewer gases from entering the home and allow wastewater gas and odor to escape. Plumbing vent pipes are located on roofs, away from windows or air conditioning units, so that the fumes can easily dissipate. Besides, does every drain need a vent? Every fixture is required to have an internal or external trap; double trapping is prohibited by plumbing codes due to its susceptibility to clogging. Every plumbing fixture must also have an attached vent. The top of stacks must be vented too, via a stack vent, which is sometimes called a stink pipe.How far can a tub be from a vent?It depends on the diameter of the trap. Under International Building Code use table 906.1. A 1.5″ trap can be 6 feet from the vent (if your trap is only 1.25″ the maximum distance is 5 feet). It looks like you should be fine in your situation.
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