Air admittance valves are mechanical devices that take the place of plumbing vents. They're inexpensive, they work, they can reduce the number of plumbing vent penetrations at the roof, they won't get ...

THE TURBOVENT AIR ADMITTANCE VALVE with a 1½"-2" HUB X FIP combo adapter is now available in either ABS or PVC. The adapter is designed to fit over 1½" or 2" DWV pipe. The valve meets ASTM 2665 and ...

Some bathroom and kitchen sinks have “S” traps like this one that drain into the floor. It’s important that sewer gas doesn’t get trapped in them. Proper venting of drain lines ensures that a small ...

Q: My new kitchen is going to have a large island with my double-bowl sink in it. The young plumber and my contractor want to use some newfangled thing that just fits under the cabinet. They call it ...

Q. My new kitchen is going to have a large island with my double-bowl sink in it. The young plumber and my contractor want to use some newfangled thing that just fits under the cabinet. They call it ...

An island sink presents a unique plumbing problem: Like all drains, the sink drain has to be vented to allow air into the pipes to equalize pressure, but how do you connect it to the building’s vent ...

Q. I'm interested in buying a two story house built in 1927. The current owners have lived there since 1946 and have done very little updating. One potential problem: there is a one inch diameter pipe ...

Q: We have a gurgling sound that erupts from our bathtub drain every time we flush the toilet. No water comes up from the drain and it drains well when we shower. Could something be wrong with the ...

Q: We have a gurgling sound that erupts from our bathtub drain every time we flush the toilet. No water comes up from the drain, and it drains well when we shower. Could something be wrong with the ...