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Lippert 360 Siphon RV Vent Cap for Black Water Holding Tanks - 4-1/2" Diameter - Black

Lippert 360 Siphon RV Vent Cap for Black Water Holding Tanks - 4-1/2" Diameter - Black

Item # LC389380
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This vent cap creates a vacuum to remove odors and gasses from your holding tank and prevent them from entering your RV or camper. Maintenance-free cap has 2 installation options. Fits 1-1/4", 1-1/2", and 2" diameter pipe stacks. Lowest Prices for the best rv vents and fans from Lippert. Lippert 360 Siphon RV Vent Cap for Black Water Holding Tanks - 4-1/2" Diameter - Black part number LC389380 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Lippert RV Vents and Fans - LC389380

  • Plumbing Vent
  • Vent Cap
  • Black
  • Lippert

This vent cap creates a vacuum to remove odors and gasses from your holding tank and prevent them from entering your RV or camper. Maintenance-free cap has 2 installation options. Fits 1-1/4", 1-1/2", and 2" diameter pipe stacks.


Features:

  • Vent cap removes odors and gasses from the black water holding tank in your RV or camper
    • Prevents those odors and gasses from seeping into the RV
  • Siphoning, maintenance-free design uses the air outside your RV to create a natural, upward vacuum in the vent pipe
    • Operates immediately during any wind condition
    • Eliminates the need to use additives, chemicals, or perfumed cover-ups
  • Integrated bug screen helps keep out insects and debris
  • Durable, UV-resistant polycarbonate construction
  • 2 Easy installation options
    • Modified installation upgrades the lid of your existing vent cap
    • Complete installation replaces your entire existing vent cap unit
  • Universal design is compatible with 1-1/4", 1-1/2", and 2" diameter pipe stacks
    • PVC adapter sleeve (not included) may be needed for 1-1/4" and 2" pipe stacks
    • Funnel is included for 1-1/2" pipe stacks
  • Sealant or an adhesive (sold separately) is required
  • Black color
  • Base is RVIA 1192 compliant


Specs:

  • Overall dimensions: 4-1/2" diameter x 3" tall
  • Mounting hole spacing:
    • Side by side: 2-7/16"
    • Across: 3-7/16"
  • Collar diameter: 3-1/2"
  • 1-Year warranty


360 Siphon RV Vent Cap Dimensional Diagram

360 Siphon Vent Cap vs. Other Vent Caps

Dealing with a black water holding tank is something every RV enthusiast dreads, especially if the tank starts to affect the air quality of the RVs interior. Most vent caps cannot perform effectively with wind turbulence - the wind will be forced down into the tank, which will increase the air pressure in comparison to the air pressure in the RV. This drops the oxygen levels in the black water tank and pushes odors and gasses past toilet seals, causing them to seep into your RV living space.


How 360 Siphon RV Vent Cap Works

The 360 Siphon will successfully and immediately eliminate these odors from your black water holding tank in any wind condition. When wind passes over the cap, it is designed to naturally create an upward vacuum in your vent pipe to exhaust any smells or gasses out of the holding tank to the outside of the RV. This drops the air pressure in your holding tank and prevents those smells from getting into the interior of your RV. By doing this, the 360 Siphon has created an oxygen-rich environment that helps further waste breakdown in the holding tank. Furthermore, the 360 Siphon provides you with a dependable, long-lasting solution, whereas perfumed chemicals can take up to 48 hours to kick in and merely mask the odors for a short period of time.


2 Installation Options

This maintenance-free vent cap is compatible with 1-1/4", 1-1/2", and 2" pipe stacks. If you have a 1-1/2" pipe stack, the included funnel is required for installation. If you have a 1-1/4" or 2" pipe stack, a PVC adapter sleeve (not included) may be required for installation. There are 2 options for installing this vent cap: modified and complete. Which option you go with depends on the current condition of your existing vent base and sealant.


If your existing base and sealant have been installed properly and are in good working condition, it is recommended to go with the modified installation. For the modified installation, you will first remove the lid of the existing vent cap. Then attach the funnel, if needed, to the 360 Siphon lid, and attach the 360 Siphon lid to the existing base with sealant (sold separately). You will also need to use the included collar to ensure a proper seal between the stack and base.


On the other hand, if your existing vent cap has UV damage or if it's not installed properly, it would be best to do a complete installation. To do that, you would remove the entire existing cap, including the base. Then you would install the new base with sealant and your existing hardware. Lastly, attach the funnel, if needed, to the lid, and attach the lid to the base with sealant. Please note that the collar is not needed for the complete installation.



389380 Lippert Components (LCI) 360 Siphon RV Plumbing Vent Cap for Motorhomes - Black

Replaces Lippert Components 364464





Video of Lippert 360 Siphon RV Vent Cap for Black Water Holding Tanks - 4-1/2" Diameter - Black

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Lippert Components RV Vents and Fans LC389380 Review

Today we're going to take a look at the Lippert Components 360 Siphon RV Holding Tank Vent Cap. This comes in black. This is going to do a great job of eliminating those nasty odors that can occur in your RV from that black water tank. A lot of the times the gas can build up and just create a back feed into the commode in your bathroom and it's just kind of a hassle. So, this is going to be a differently designed cap to help eliminate that. Basically it's going to create a vacuum to pull those gasses up and out of your RV.

By doing that it's going to not only pull that fresh air in and out, it's going to create a more oxygen rich environment inside that black water tank so you don't have to use any many chemicals to break down all of the solid waste inside there.It's going to basically work by fitting into your vent at the top of your RV. It does come with this funnel. This is going to work for your one and a half inch tube. If you have a two inch you won't need to use that funnel it'll just fit directly in there. There's detailed instructions on how to get this installed in the instructions that it comes with.

So, if you we're just replacing an old cap it shows a couple of different designs there and how to get this installed as well as how to install it on a taller roof stack and how to just install it from scratch if you're replacing a broken one or one that maybe was properly installed before. There's also a pretty good diagram on the back showing exactly how that works and to eliminate the odors from your RV.There's going to be a pretty easy set up. There's no moving parts, no maintenance required and once it's installed it's going to work pretty much immediately. As soon as the wind goes across it at the top it's going to help to pull that air up and out. It does have a universal fit, again this is going to work for one and a half to two inch pipes.

If you need an adapter you can pick one up separately. You will need to get some adhesive as well as some other components. They are listed in your instructions again to help get that completely installed. Those are available separately as well.This is going to be made of a strong poly carbonate construction so it's going to be really durable. As you can see this one is going to come in black.There is a built in bug screen there to help keep unwanted pests out of your black water tank.

And this comes in black but it's also available in white. The part number for that is going to be LC389381 and that is available here at Etrailer.com. And that's going to do it for our look at the Lippert Components 360 Siphon RV Holding Tank Vent Cap in black.


Customer Reviews

Lippert 360 Siphon RV Vent Cap for Black Water Holding Tanks - 4-1/2" Diameter - Black - LC389380

Average Customer Rating:  4.6 out of 5 stars   (9 Customer Reviews)

This vent cap creates a vacuum to remove odors and gasses from your holding tank and prevent them from entering your RV or camper. Maintenance-free cap has 2 installation options. Fits 1-1/4", 1-1/2", and 2" diameter pipe stacks.

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Review from a similar 360 Siphon in RV Vents and Fans


Very please I went with this vent.



by:

Review from a similar 360 Siphon in RV Vents and Fans


I would give this 5 stars, but it is difficult to install and special sealant required on inside components and piping whereas other vents only require regular rv outside sealant such as butyl tape, eternabond tape and self leveling sealant . It would be helpful if this was included in the product description on the website instead of "Sealant or an adhesive (sold separately) is required" . We as rv owners already know that sealant is required, but 3m 5200, or Sikaflex 221 is specifically mentioned in the instructions which can't be read until the carton is irreversibly opened. These are not normal sealants on hand. Job is done waiting for results.



by:

Review from a similar 360 Siphon in RV Vents and Fans


Works great, no problems



by:

Review from a similar 360 Siphon in RV Vents and Fans


I purchased this to replace the original vent on my Winnebago that was built in 1999. It went on easily and works well. I received fast shipping and great service from etrailer.



by:

Review from a similar 360 Siphon in RV Vents and Fans


Fits over my old mounts so I didn’t have to mount the new bases.



by:

Review from a similar 360 Siphon in RV Vents and Fans




by:

Review from a similar 360 Siphon in RV Vents and Fans



9
9



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Info for this part was:

Employee Leah B
Updated by:
Leah B
Employee Halie H
Updated by:
Halie H
Employee Noah M
Updated by:
Noah M
Employee Kathleen M
Installed by:
Kathleen M
Employee David F
Installed by:
David F
Employee Dustin K
Video by:
Dustin K
Employee Mary E
Written by:
Mary E
Employee Amanda M
Edited by:
Amanda M

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