Top View of Motorhome Roof showing solar panels and ventilation

Top 15 Best RV Sewer Vent Caps

Updated October 2, 2022

- By Annie Martin

One of the less glamorous, but nonetheless essential, elements of RVing is dealing with the sewer system. RVers know that a big part of the fun of RVing is being able to get out and explore the world, but staying connected to your home-away-from-home is important, too. That’s why having the best RV sewer vent caps is key – it keeps your rig from filling up with stink! This often includes using a sewer cap to ventilate the septic tank. Choosing the right sewer cap can be tricky, especially since there are so many on the market.

In this post, we’ll take a look at some of the best RV sewer vent caps available and help you decide which one is best for you. We have provided a variety of options based on budget and personal preferences. Although all of these sewer caps will do the job, we recommend you take a look at our highly researched options. Keep reading below to find out which one we suggest!

What is an RV Sewer Vent Cap?

The RV sewer vent cap allows odors from the gray and black water tanks to vent out rather than enter your RV.

The RV plumbing pipe, also known as the RV vent pipe extends from the gray and black water tanks to the RV roof. If the cap on your RV’s plumbing pipe is broken or missing, the RV will have an unpleasant odor. The RV sewer vent cap also helps to keep out insects and other pests.

There are two types of RV sewer vent caps: the push-on type and the screw-on type. The push-on type is easier to remove for cleaning or replacement. The screw-on type is the most secure and is also easy to install. An RV vent cap is easy to replace yourself.

Things to Consider Before Buying RV Sewer Vent Caps

RV sewer vent caps are an important but often overlooked part of the RV sewage system. Without a properly functioning sewer vent cap, RV sewage can back up into the RV and cause all sorts of problems. That’s why it’s important to choose the right RV sewer vent cap for your needs. Here are a few things to consider before making your purchase:

1. Size: RV sewer vent caps come in a variety of sizes, so make sure to measure the diameter of your RV sewer vent pipe before making your purchase.

2. Material: RV sewer vent caps are usually made from plastic or metal. Both materials have their pros and cons, so think about which one would be best for your needs.

3. Style: RV sewer vent caps come in different construction designs. Think about what would work best for your needs.

4. Budget: Sewer vent caps can range in price, so be sure to set a realistic budget before you start shopping.

Taking the time to choose the right RV sewer vent cap will help ensure that your RV sewage system stays in good working order.

How to Choose the Best RV Sewer Vent Caps?

RV sewer vent caps are an essential item for any RV owner. RV sewer vents are used to allow the RV to ventilate the sewage system while preventing odors from escaping. RV sewer vent caps come in a variety of sizes and styles, making it important to choose the best one for your RV. The best RV sewer vent cap will fit snugly on the RV sewer vent pipe and create a tight seal. It should also be made of durable material that can withstand the elements.

When choosing an RV sewer vent cap, it is also important to consider the style of cap that will best complement your RV. There are a variety of styles available, so take some time to browse the options and find the one that best suits your needs. By taking all of these things into account, you’ll be able to find a sewer vent cap that will last for many years.

What are the Best RV Sewer Vent Caps?

After conducting 20 hours of research on 40 RV sewer vent caps, we were able to identify the top 15 best RV sewer vent caps.

Here are our top recommendations for the best RV sewer vent caps on the market right now.

1. Camco Cyclone Rotating Sewer Plumbing Vent

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10/06/2022 11:53 am GMT

The Camco RV Cyclone Sewer Plumbing Vent draws holding tank odors outside of your RV using wind power. We enjoy how even a light breeze can generate a strong vortex that lifts odors up and away thanks to the cyclone’s dynamically built shape. We also appreciate how simple it is to install any RV plumbing vent. You can get this vent kit in black or white.

2. NU-SET Lock RV Roof Sewer Vent Cap

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10/06/2022 12:03 pm GMT

This RV roof sewer vent cap is an excellent choice for replacing the sewer vent cap on your RV or trailer. It’s composed of PVC and has UV stabilizers in it, so it won’t fade quickly. The base measures 5-1/4″ in diameter and stands 3″ tall with the top half attached.

3. Ultra-Fab Products Mini Solar Plumbing Vent

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10/06/2022 03:29 pm GMT

We like how easy it is to install this sewer vent cap on the RV roof. Solar power lets it start and stop, so it doesn’t need any wiring. It can remove odors and moisture from RV plumbing without making a sound. The NU-SET roof sewer vent cap can replace most RV roof sewer vent caps, and the aerodynamic design makes for less drag. This RV sewer vent cap comes with a 1-year manufacturer’s warranty.

4. Camco Replace-All Plumbing Vent Cap with Spring Attachment

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10/06/2022 04:29 pm GMT

This is an excellent sewer vent cap for replacing lost or broken RV Plumbing Vent Caps. This cap will fit a 2″ plumbing vent pipe. It is made with UV inhibitors to help your vent cap last longer and the color will not fade. The best thing about this RV roof sewer vent cap is that it attaches with a spring tension, so you don’t have to replace the whole vent.

5. Camco Black Replace-All Plumbing Vent Kit

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10/06/2022 04:38 pm GMT

This RV sewer vent is a great solution for replacing your damaged RV plumbing vent.  It can fit a 1″ to 2-3/8″ outside diameter pipe. We appreciate how this vent kit comes with putty tape and installation hardware. We found it quite simple to set up. It is made with UV inhibitors to help your vent cap last longer. You can get this vent kit in black, white, or beige.

6. Lippert 360 Siphon RV Sewer Vent Cap

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10/06/2022 04:58 pm GMT

We appreciate that this RV sewer vent cap is designed for a universal fit as the 360 Siphon works with all RV vent caps. It removes scents from the sewer vent before they may infiltrate your RV. We also admire its durability because it is made of polycarbonate, and its smart, patented design has no moving parts. Another fantastic feature is the built-in screen, which keeps bugs out of your RV for a worry-free camping experience.

7. Ventline White Plastic RV Sewer Vent

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10/06/2022 05:13 pm GMT

This Ventline RV sewer vent is a terrific low-cost option to replace your RV sewer vent, which is one of the reasons why we appreciate it so much. It is made of durable plastic that can fit a pipe that is 1 1/2 inches in diameter. This vent has dimensions of 7.6 inches in length, 6.2 inches in width, and 3.9 inches in height.

8. Camco Polar White Plumbing Vent Kit

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10/06/2022 05:48 pm GMT

We enjoy how this Camco Polar White Plumbing Vent Kit acts as a waterproof flashing and weather shield for sewer vent pipes up to 2 1/2″ in diameter and projects up to 2 1/2″ above the roof. The diameter of the base is 5 1/4 inches “. We also like that you can buy this vent as a kit that includes putty tape and screws.

9. RVMATE Plumbing Vent Cap

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10/06/2022 06:08 pm GMT

This RVMATE sewer vent cap fits vent pipes with a diameter of 1″ to 2-3/8″. It is 3″ tall and has a 5.3″ base diameter. This UV-resistant vent pipe is composed of durable solid plastic. We appreciated how simple it is to install and how the vent cap can be removed. The base includes 6 screw holes for a secure attachment to the RV roof.

10. Ventline Metal Plumbing Vent Cap

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10/06/2022 06:33 am GMT

This Ventline plumbing vent is constructed of extremely long-lasting galvanized steel, which is a quality that we truly like. It has a cap that can be easily be removed and it can fit a vent pipe that is 1-1/2 inches in diameter.

11. Danco Steel RV Plumbing Vent Cap

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10/06/2022 05:18 pm GMT

We like that Danco’s RV sewer vent cap is solidly constructed from zinc metal. It’s the right size for a vent pipe that’s 1-1/2″ in diameter.

12. Custom Plastics Polar White Plumbing Vent

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10/06/2022 12:50 pm GMT

We’re very pleased that this RV sewer vent cap is made to fit most standard 1-1/4″ or 1-1/2″ vent pipes. This sewer vent cap measures 9.32 inches in length, 4.87 in width, and 2.33 inches in height. We also like that it is simple to install.

13. Leisure Coachworks RV Plumbing Vent Cap

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10/06/2022 05:38 pm GMT

This Leisure Coachworks RV Plumbing Vent Cap is made of durable polyethylene plastic, which can resist ultraviolet rays and has a long service life. This RV sewer vent cap fits for 1″ to 2 3/8″ outside diameter vent pipe. The inside diameter measurement is 3.8″ with a height of 3″ We really like that it is easy to install as this sewer vent cap is designed to be detachable and can be easily removed by pulling it off the vent. We also really like that this cap easily snaps onto the vent pipe.

14. Danco Plastic Mobile Home Plumbing Vent Cap

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10/06/2022 01:54 pm GMT

The Danco RV sewer vent cap is made to fit vent pipes up to 1-1/2 in. in diameter. We like that the Danco Plastic Mobile Home RV sewer vent cap is made of strong plastic and is resistant to rust and corrosion. We especially enjoy how this cap has a weather-resistant seal.

15. JR Products Mushroom Style Plumbing Vent

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10/06/2022 02:55 pm GMT

This mushroom-style plumbing vent cap has a screw-on top for an extra secure attachment. We enjoy the long-lasting, low-profile design, as well as how quick and simple it is to install. This RV plumbing vent cap has a universal fit and may be used for any venting application.

Final Thoughts on Finding the Best RV Sewer Vent Caps

It’s important to choose the right RV sewer vent cap, but it doesn’t have to be hard. There are different sizes and styles, so take your time to find the one that works best for you. The best RV sewer vent caps are made of strong, weatherproof materials that fit tightly on the RV sewer vent pipe. Choosing the right RV sewer vent cap will help keep your RV smelling clean and fresh.

What are Your Thoughts on the Best RV Sewer Vent Caps?

Drop a comment below and let us know your thoughts on what you look for when buying an RV sewer vent cap and if you’ve learned anything from your search for the best sewer vent cap for your RV.

Annie Martin

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