Written By Heather Fishel
Published Nov. 23, 2021

Admit it: You don’t like dealing with your RV’s waste tank, nor the hoses, fittings, and other components involved. While having a cushy bathroom in your camper is a luxury, it comes with some fairly un-luxurious tasks, like facing waste system leaks, emptying your tank, and dealing with everything from unpleasant odors to gross clogs. That’s why it’s important that you have tightly closed, properly fitted RV sewer hose fittings. It’s those fittings that make dealing with your waste less messy and far less stinky, because they seal in the gunk while keeping it moving through your on-the-go sewer system. Don’t skimp on your RV’s sewer hose fittings – instead, check out our picks for the best ones you can buy.

Best RV Sewer Hose Fitting Reviews & Recommendations

If you’re searching for a fitting that offers a secure attachment both to your RV’s dump tank and hoses, the Camco RhinoFlex Bayonet Fitting with Locking Ring is hard to beat. Specifically designed to lock liquids and waste inside your sewer hose and prevent leaks, this RV sewer hose fitting creates a tight connection. In fact, it’s so tight it’s actually odor tight, which means you shouldn’t smell a thing while you’re emptying your waste tank. This four-prong bayonet-style fitting features a locking ring and built-in gasket for added security, and it swivels 360 degrees so connections are made easily. Arrows are printed right on the fitting’s exterior so you never forget how to properly secure or loosen it from your hose.

While this RV sewer hose is durable and UV stabilized to ensure that it can last a long time, there is one potential drawback. This fitting is orange, not clear, so you can’t see when your tank is empty. It’s a small drawback, and it’ll only bother you if you want the visibility a clear fitting can offer.

Specs
  • Brand Camco
  • Fitting Style 4-prong bayonet
  • Material UV-stabilized resin
PROS

Highly durable resin construction

Locking ring prevents accidental disconnects

Built-in gasket seals in odors

Bayonet prongs help create a secure fit

CONS

Opaque, not clear

Keep it affordable when you need to drain your waste tank, and opt for the Valterra RV Drain Hose EZ Coupler Valve Adapter. This low-priced, highly effective RV sewer hose fitting attaches to the end of your hose, twisting right into place with no extra tools or hose clamps needed to achieve a tight fit. It turns the hose end into a valve system, featuring four bayonet prongs. Self-threading makes the fitting leak-proof, and it also helps prevent messes while you’re dealing with your waste tank. Plus, it’s constructed out of high-impact polystyrene so it’s durable. You can even use it with Valterra’s other RV sewer hose accessories, including hose extensions and multiple hoses.

The only potential drawback to this RV sewer hose fitting is it fits so tightly you’ll actually need to lubricate the sewer hose before you can get it in place. Some users suggest spray furniture wax, but anything that’s slick (and safe for your hose) should work.

Specs
  • Brand Valterra
  • Fitting Style 4-prong bayonet
  • Material High-impact polystyrene
PROS

Durable construction

Secure no-tools-needed fit

Creates leakproof seal

Can be used with accessories and other attachments

CONS

Need to lubricate hose end before attaching the fitting

The Lippert Components Waste Master RV Sewer Hose Bayonet Fitting is a secure, well-fitted fitting and a conversion tool in one. Designed to take an average hose and make it part of the user-friendly Waste Master waste disposal system, it can make emptying your tank easier and leak-free. It’s easy to install and doesn’t require any kind of specialized installation process to get a secure fit. While traditional bayonet fittings can leak, this product uses an industrial-grade cam lock design to offer a more reliable seal.

While this male bayonet fitting turns your sewer’s original end into a camlock fitting, keep in mind that it doesn’t work on all hoses. It’s specifically designed for the Lippert Components Waste Master system, and it may not work with any other sewer components from other brands or systems. Plus, it’s expensive compared to less specialized hose fittings

Specs
  • Brand Lippert Components
  • Fitting Style Male bayonet
  • Material Plastic
PROS

Leak-proof

Converts bayonet fittings into cam lock fittings

Easy, tool-free installation

Secure without getting stuck in place

CONS

Expensive

Only works with Lippert’s Waste Master system

If you want to be able to see when your waste tank is empty but don’t want to see all the details of your waste, the Thetford Titan Wye Sewer Adapter is a great choice. You’ll be able to watch all of your waste empty, but the green coloring adds a little opaqueness to keep the process pleasant. This wye-style RV sewer hose fitting offers a universal fit for all standard-sized hoses, and it’ll work as long as your hose has a universal bayonet. It offers a tight, reliable connection thanks to its EPDM seals, which are specifically designed for prolonged hookups. As a bonus, you can connect two sewer hoses to this fitting, allowing you to empty faster and multiple holding tanks.

The only downside is the fitting isn’t very strong. If too much pressure is placed on it, it’ll pop right off your sewer hose.

Specs
  • Brand Thetford
  • Fitting Style Wye
  • Material High-grade plastic with EPDM seals
PROS

Connects to two sewer hoses simultaneously

All three ends swivel 360 degrees

Universal fit

Translucent design lets you see tank empty

CONS

Too much pressure can cause fitting to pop off and leak

When it comes to versatility, it’s hard to beat the Camco RhinoFlex RV Bayonet Elbow Fitting with 4-in-1 Adapter. This RV sewer hose fitting swivels, adapts, and even offers an angled elbow so you can easily drain your waste tank without any difficulty. It’s a four-in-one adapter that works with four different dump station inlet sizes, from 4-inch NPT to 3-inch slip fittings. Plus, the fitting rotates 360 degrees, so you don’t have to struggle when connecting it. A built-in gasket offers an odor-tight, leak-free fit. And perhaps best of all, you’ll be able to watch your waste tank drain due to the clear plastic elbow of the fitting.

In addition to all of these qualities, the elbow portion is even removable when you remove the fitting and need to store it. However, some RVers will find that the fitting may not be long enough to fit all dump station inlets. It can be particularly problematic for those that are in the ground.

Specs
  • Brand Camco
  • Fitting Style Elbow bayonet
  • Material Plastic
PROS

Clear elbow lets you watch tank drain

Fits four sizes of dump station inlets

Rotates 360 degrees

Odor-tight gasket also prevents leaks

CONS

Elbow may not be long enough

Fitting may not help you reach in-ground inlets

In order to make our product picks for the best RV sewer hose fittings, we took a look at the many different types of fittings available. We compared bayonet, cam lock, elbow, wye and other shapes and styles, paying careful attention to details like their gaskets, their ability to prevent leaks, and their durability. We also took material and versatility into consideration, as more versatile fittings can be more helpful. In addition, we made sure to look at users’ feedback about using these RV sewer hose fittings in real-life settings to determine whether or not they were truly leak-free.

How We Selected The Products 

Our product selections, rankings, and awards for this story are based on research. While we haven’t conducted real-world testing on all of these products yet, we’ve looked at consumer testimonials and data, tutorials, and general discussions on social media and in forums. We also consider price and specification in the context of the segment. And, of course, we rely on our institutional knowledge of the automotive landscape to weed out weak products.

Buying Guide/What to Look For 

What features and factors should play a role in your decision to buy a particular RV sewer hose fitting? We’ll help you narrow down your options with our buying guide. We have all of the advice you need to pick out a quality, reliable RV sewer hose fitting that won’t let you down.

What to Consider When Buying RV Sewer Hose Fittings

Types of RV Sewer Hose Fittings

Adapter

RV sewer hose fittings are often adapters, which means they attach to the end of your sewer outlet connection (or hose) and make it compatible with dump site inlets. Adapter fittings come in a few different forms – straight, curved (usually angled at 45 degrees), or elbow (90 degrees). These adapters may be able to rotate or swivel to make dumping your waste tank a little easier, but their goal is to get the waste from your tank through your hose and into the dump station without any leaks.

Connector

Connectors are a type of RV sewer hose fitting that connect to adapter-style fittings. They bring the hose and your adapter together, acting as the in-between that lets you use the right adapter for any given dump station inlet. They’re essentially a linking component. You can use connectors both to connect to adapters or to link multiple hoses together. And if you opt for a locking connector, or locking ring connector, you’ll enhance the security of your RV’s sewer setup with an extra leak-free, tightly-sealed fitting right before you add an adapter.

You May Also Like Our Review of the Best Expandable Hose

FAQ:

RV Sewer Hose Fitting Key Features

Hose Compatibility

An RV sewer hose fitting won’t be helpful if your fitting doesn’t work with your existing hoses. While many of these fittings are made to fit standard-sized RV sewer hoses, there are plenty of fittings that aren’t. Some require specialized hose diameters, different threads, or even specific waste management or sewer systems. It’s a good idea to match your fittings to your hoses by choosing products from the same brand, or you can check compatible fittings and hose sizes before buying. 

Built-In Gaskets

While pretty much every RV sewer hose fitting promises to be leak-proof and odor-free while in use, not all can really live up to them. To make sure you’re picking a completely reliable and leak-free fitting, look for products that include built-in gaskets. These extra details can make a difference when you’re emptying waste, and they can add more security in terms of an airtight, leak-free seal. Plus, gaskets can also help limit odors. 

Weather-Resistant or Weatherproof

Lastly, it’s important to make sure the fitting you choose can withstand the outdoors. After all, you use your RV outdoors, so all of its components need to be able to survive sunny, hot days as well as unexpected rain and cold weather. While plenty of fittings are thick and durable, it’s an even better idea to shop for those that include special weather-resistant or weatherproof details. Fittings built out of UV-stabilized resin, for example, will be able to handle exposure to sunlight no matter how frequently they’re sitting out in the sun.

RV Sewer Hose Fitting Tips and Tricks

As with something you do for decades upon decades, you pick up a few tips and tricks along the way in terms of selecting the right product, and/or using it. That’s the case with us andRV sewer hose fittings. To help you bridge the information gap, here’s a selection of what we’ve learned along the way.

  • There’s a benefit to translucent and clear RV sewer hose fittings; they allow you to see when your tank is completely empty. While it might sound like a trivial detail, opting for a clear or translucent fitting can help you empty the tank without disconnecting your hose too early.
  • Curved and elbow hose fittings can be a bit bulkier and more difficult to store when not in use. While most other types of fittings can stash inside your bumper, you’ll want to have an easily accessible storage place just for these fittings.
  • Keep in mind that clear plastic fittings can be a little weaker and more prone to breakage than their opaque (and thicker) counterparts. You may see clear fittings degrade faster.

Q: Can you use RV sewer hose fittings to connect two hoses together?

A: Yes. Just make sure you opt for a connector-style fitting and not an adapter. Connector fittings are designed to link two hoses together. Or, if you’d like to link two hoses so you can empty two tanks simultaneously, opt for a wye adaptor, which features three connection points so you can add two hoses plus connect to an inlet.

Q: How do I know what fittings will fit my RV sewer hose?

A: There are two options. You can either buy fittings that are made by the same manufacturer or brand as your sewer hose; these are generally designed to be compatible. Or, you can take a look at the threads and the diameter of your sewer hose, and then find a fitting that will match. In general, many RV hoses are standardized, so universal-style fittings will likely work just fine.

Q: What is a bayonet RV sewer hose fitting?

A: Bayonet-style fittings are connector fittings with prongs. These prongs help make a secure connection between two hoses or a hose and an adapter-style fitting. 

Final Thoughts

Our pick for the best RV sewer hose fitting is the Camco RhinoFlex Bayonet Fitting with Locking Ring, which offers both an extra layer of security in the form of a locking ring and a built-in gasket that prevents leaks and odors from escaping. However, if you’re looking for value above all else, the Valterra RV Drain Hose EZ Coupler Valve Adapter is affordable, straightforward, and gets the job done without extra frills (or extra expense).

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