I am adding a basement utility sink 3.5 feet from the basement stack.
How far from the stack would a re-vent be needed to be in compliance
with the US Plumbing code? If not needed by local code, what would be
gained by re-venting this sink? I plan to use this sink to drain a
Washing machines often have quite aggressive pump discharges. A
combination of that and a load of suds could overpower some sink
configurations. Code or not, a good vent looks like a way to avoid
future problems. Cheap insurance. really.
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