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homeguides.sfgate.com/easiest-way-vent-bathroom-plumbing-69544.html

Because a standard sink drain exits through the wall behind the sink, it sits higher than the tub, shower and commode drains, making it an optimal spot for a vent.

.ask.com/youtube?q=How+To+Vent+Shower+Drain&v=0OAcpLi1DpY
Jul 2, 2012 ... learn what to vent and when. ... proper venting of fixtures ... What Not To Do With Sink Drain Vent Pipe- Plumbing Nightmare - Duration: 4:12.

www.dummies.com/home-garden/plumbing/figuring-out-your-drain-waste-vent-lines

The drainpipes collect the water from sinks, showers, tubs, and appliances. ... The vent pipes remove or exhaust sewer gases and allow air to enter the system  ...

www.jaytechplumbing.com/2013/01/wet-venting

Jan 4, 2013 ... This time the wet vent connects to the vertical leg of the toilet drain ... and vent section of pipe) can remain 1.5″ if both the sink and shower ...

www.wikihow.com/Vent-Plumbing

Every plumbing fixture, from a toilet to a shower, needs to be connected to ventilation piping. Ventilation pipes prevent a vacuum from being formed in the drain ...

terrylove.com/forums/index.php?threads/drain-and-vent-question-in-small-bathroom.44896

Should I vent the shower or is the wet vent run short enough to use the toilet drain ? It's 1.5" pipe and about 3' to the main stack. The vent stack ...

www.diyadvice.com/diy/plumbing/prep/venting

Learn about the principles of venting. Find tips and information on vent types, installing vents, installing vent pipes, catch basins, the main drain, venting options, ...

www.plumbingpros.com/pdf/dwvents.pdf

The Drain Waste and Vent (DWV) system is perhaps the most important part ... building drain pipe to provide a water seal for keeping ..... Shower Source. Of Wet  ...

diy.stackexchange.com/questions/16444/do-i-need-a-vent-for-extending-a-drain-to-a-new-bathroom-addition

You must have a vent above the vertical run for these drains. ... Horizontal Wet Venting (page 4) which shows a shower connected downstream ...

www.diyadvice.com/diy/plumbing/bathroom/drain-vent-lines

Drain and vent lines must be positioned precisely, so you should install them before the supply pipes. It may be possible to simplify supply runs by moving a vent ...