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Allow air to enter DWV systems to equalize pressure when water drains out of the system; eliminate the need for costly roof penetrations and vent piping. 1ATD5 vents up to 500 DFUs on a stack; 1ATD6 vents up to 160 DFUs on a branch and up to 24 DFUs on a stack. 15W940 has a replaceable cabon filter to reduce plumbing drainage system odors.
From the Manufacturer
Allow air to enter DWV systems to equalize pressure when water drains out of the system; eliminate the need for costly roof penetrations and vent piping. 1ATD5 vents up to 500 DFUs on a stack; 1ATD6 vents up to 160 DFUs on a branch and up to 24 DFUs on a stack. 15W940 has a replaceable cabon filter to reduce plumbing drainage system odors
Kyle
Reviewed in the United States on July 26, 2024
Eliminated the need for the vent stack through the roof. Since my roof leaked at the vent stack I decided to cut stack down to attic level and have the roofers re-roof and delete stack exposure. Works perfectly.
SLP
Reviewed in Canada on August 11, 2023
Perfect stink pipe
Dan T Downs
Reviewed in the United States on September 11, 2022
This item was installed to eliminate gaseous odors that build up in plumbing pipesEasy to install when replacing older part.
EmiliePoissant
Reviewed in Canada on October 23, 2022
Qualité vs prix est super
Ricktooltime
Reviewed in the United States on November 21, 2020
This is an excellent solution for a bathroom that is away from the main stack. Releases vacuum which allows flow of water out of sink, shower and toilet. An recent innovation for US that comes from Europe.
Michael Hennessy
Reviewed in the United States on April 13, 2020
I have a customer who was complaining about the "aroma" from their main drain fresh air vent that was under their deck. I installed a catch basin (in plenty of gravel for drainage) around the vent pipe and installed this AAV inside the basin so it is protected from anything above by the basin grate. Problem solved. No more fumes and the system vents perfectly. Note that this unit needs a UV protection cap for exterior installation.
George B.
Reviewed in Canada on February 18, 2019
Using in my cabin no need for a hole through roof
MEL
Reviewed in the United States on February 2, 2018
Seems to work as designed.
Neal Powell
Reviewed in the United States on November 23, 2018
Plumbed my whole house without roof penetrations. Be sure and check your local codes prior to use. I live in a rural county with no plumbing inspections. Some areas may not approve. I have two main vents in the attic. Been using these for a year with no issues with any drains.
GurnBlanston
Reviewed in the United States on September 19, 2017
The concept is old, but not approved by code until relatively recently at least in Connecticut. So we were having a new roof put on, and I wanted no the pipes going through the roof - to accomplish this you install Air Admittance Valves. The only problem the code says at least one vent must vent to the outside unless an alternative engineering solution is used. That's where you use an Odorhog filter. Note that the photo is rotated 90 degrees (don't know why), the filter must be vertical.
clement lehman
Reviewed in the United States on August 11, 2017
The product is amazing it has a rubber gasket attached to it that fits over a 3-inch pipe or slides into a 4-inch pipe. I had a different brand put on last year when there was a lot of pressure it released a gas smell. And the other one went bad and I could not get the gas smell out of my basement that's sewer gas. I put this on yesterday came down this morning to the basement it smells fresh and clean with no sewer gas. I am excited to have this product well worth the money.I have attached the studor photo... and the competitors that does not work
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