I'm moving over my laundry tub about 8 feet in my basement. I'll need to run a new vent, and it will be a big pain to run the vent pipe outside. Can I terminate the vent pipe inside the basement and just cap it off with this:
Check with your Building Inspection Department to see if "air admittance valves" are allowed in your jurisdiction in lieu of normal venting. VAP is a brand name and so is www.studor.net
They will work fine, IF allowed by your local code.