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An example bathroom layout is as follows. The sink has a drain pipe 1.5" in
diameter, which connects to a vertical vent pipe. The toilet has a 3" waste pipe
Plumbing an island sink is tricky. We show two methods of properly venting the
drain—an island (loop) vent and an air admittance valve—so that waste water ...
A sink vent is a necessary part of the drain for any sink. The purpose of a sink
vent is to help prevent a vacuum that can occur when the sink is full of water.
Local building codes regulate the maximum connection distance of plumbing
fixtures for venting purposes. Because a standard sink drain exits through the
Nov 3, 2012 ... In the realm of second homeowner woes, I had a P-Trap assembly under the
bathroom sink. It was a strait connection to the pipe connected to ...
The vent pipes remove or exhaust sewer gases and allow air to enter the ... Water
runs down the sink drain into a p-trap (so called because it's shaped like the ...
Oct 10, 2012 ... A true vent is a vertical pipe attached to a drain line that travels through the roof
with no ... For a freestanding sink code may allow a loop vent.
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
This project explains how to fix a sewer gas smell coming from under the
bathroom sink by replacing the Studor Mini-Vent air admittance plumbing valve.