Fume Extraction at its Finest

The stack mount uses original ‘360 Siphon®’ patented technology to create a continuous updraft from the source to the top of the vent pipe. (See video below)


  • Eliminates back pressure by instilling a low pressure draw from the tank to the exhaust port of the siphon cap. Outside wind variations simply no longer matter and the rougher the condition, the better the draw.
  • Protects the stack pipe from debris, pests (built in bug screen), and excessive water entry.
  • Provides superior oxygenation to stop the buildup of Hydrogen Sulfide (the rotten egg smell).

Wind Direction and Speed – The Culprit of Odor-Causing Tank Emissions

It only takes slight down drafts of 11 degrees to blow down into an open stack. Sudden wind gusts and directional shifts will cause continued high and low pressure in the system. Too many extreme changes can eventually dry out water traps. In a windy area or in a system with slightly compromised plumbing, the 360 Siphon® will tame the turbulent wind, eliminate the culprit of back pressure, and instill a low pressure (vacuum) within the system.

Stack Mount Installation

Installation is designed to be simple and easily accomplished by anyone. It normally requires less than a minute, and pipe sizes exceeding 2″ use no screws or glues to keep in place. They are easily removed to check pipes. (Note: 2″ OD ABS black and 2″ white PVC pipe requires only two self-drilling retainer screws which we provide).

Pipe Sizes

  • 2″ Pipe – Simply place the cap on the end of the 2″ pipe, and install the 2 self-drilling screws provided in the pre-drilled holes. Do not over tighten.
  • 3 & 4″ Pipe – Mounts directly onto pipe with no screws or glue required for a snug fit
  • That’s it!

Watch the Multi-Patented 360 Products Technology Work!

It draws fumes under any wind conditions, regardless of severity.

360 Technology In Use


Pub using the 360 Siphon® technology with positive comments of success


Gen 2 Rooftop Septic Stack Mount Vent


Residential house using the 360 siphon® with positive comments on the success of the product


Hood River High School with comments about the successful removal of stench from the boys bathroom

Jefferson Institute

The 360 Siphon® on top of a vent for a research facility with comments on the success of the device in reducing the oxygen level to basically 0%



June 13, 2019

“I bought a 2018 Forest River Sunseeker RV last year and have loved the new upgrades, to include your 360 Siphon. It is unbelievable that we don’t need chemicals and that we have never had any odor in the RV. You guys have a great product. We have owned RV’s for almost 30 years and your vent is a game changer. I would guess the only people who dislike it are the toilet chemical and air freshener companies!”


~George VanOrden, Virginia


May 17, 2019

“Basically, with the original vent cap we would get sewer odors inside our RV, even though we emptied the black and grey water tanks often. We even used the odor reducing chemical treatment with at least a gallon of water after each dumping of the tanks. I thought that the odor was just another irritating factor of owning an RV. It has now been nearly two years since we installed the 360 vent and I have to say that the results have been much better than I expected. There have been no more sewer smells. Thank you for making such an improved sewer vent cap. It is much appreciated.”

Thank you!


~Bobby K., Louisiana


“I purchased an RV360 in Yuma, Arizona. That was the best money I have ever spent. We had absolutely no odors in the coach while traveling. That was a first . . . Also, we noticed right off that there were no odors in the coach when we dumped the tanks. . . This is a great product and I am telling everyone about it.”


~Everet K

Contact Us

Veteran Owned & Operated



9:00am-9:00pm PST

Distribution points

Vancouver, BC
Keizer, Oregon
Linton, Indiana


P.O. Box 21539
Keizer, OR 97307


A portion of your order total will be donated to charity and does not increase your product cost. 2020 charities are: Saint Jude's Children's Hospital, Make-A-Wish Foundation, and Wounded Warriors project.