Camco 39422 3″ Permanent Plumbing Adapter Sewer Fitting Review

If you’ve ever dealt with a wobbly, leaky, or unreliable RV sewer connection, you know how frustrating—and messy—it can be. Whether you’re a full-time RVer or a weekend warrior, a secure and permanent waste disposal setup is essential for comfort and hygiene. That’s where the Camco 39422 3″ Permanent Plumbing Adapter Sewer Fitting comes in. Designed for durability and ease of use, this adapter transforms your temporary sewer hookups into a reliable, long-term solution. In this guide, we’ll break down everything you need to know—from installation to real-world performance—so you can make an informed decision.

What Is the Camco 39422 3″ Permanent Plumbing Adapter?

The Camco 39422 is a heavy-duty, 3-inch sewer fitting engineered to permanently connect your RV’s black water tank outlet to a fixed sewer system—like those found in full-hookup campgrounds or residential RV pads. Unlike temporary bayonet-style fittings that require repeated insertion and removal, this adapter stays in place, reducing wear and tear while minimizing the risk of spills and odors.

Made from high-quality ABS plastic, it’s built to withstand UV exposure, temperature fluctuations, and constant use. Camco, a trusted name in RV accessories for over 50 years, designed this product with both safety and convenience in mind.

Did you know? According to the RV Industry Association, over 11 million U.S. households own an RV—and nearly 70% report using full-hookup sites regularly. A permanent sewer solution like the Camco 39422 can significantly improve their sanitation experience.

Why Choose a Permanent Plumbing Adapter Over Temporary Fittings?

Many RVers start with standard twist-on sewer hoses, but over time, these can loosen, crack, or fail—especially in extreme weather. Here’s why upgrading to a permanent adapter makes sense:

• Leak Prevention: Permanent fittings create a sealed connection, reducing the chance of sewage leaks.
• Odor Control: A tight seal also blocks foul smells from escaping into your campsite.
• Convenience: No more wrestling with stiff hoses every time you dump your tanks.
• Long-Term Savings: Fewer replacements and less hose damage mean lower costs over time.

For context, the U.S. Environmental Protection Agency (EPA) emphasizes proper wastewater containment to prevent groundwater contamination—a concern that permanent, sealed systems help address effectively [source: EPA Wastewater Guidelines ].

Key Features of the Camco 39422 Adapter

Let’s take a closer look at what makes this product stand out:

Unlike flimsy PVC alternatives, the Camco 39422 uses impact-resistant ABS plastic, which is widely used in residential plumbing systems due to its durability and longevity—a material standard recognized by plumbing codes .

How to Install the Camco 39422: Step-by-Step Guide

Installing the Camco 39422 is straightforward, even for beginners. You’ll need basic tools and about 30 minutes. Here’s how:

1. Turn off your RV’s water supply and ensure both black and gray tanks are empty.
2. Remove your existing bayonet fitting (if installed). Clean the outlet pipe thoroughly with soapy water and let it dry completely.
3. Apply ABS cement (sold separately) to both the RV’s outlet pipe and the inside of the Camco adapter. Use approximately 15–20 ml of cement—enough to coat evenly but not drip.
4. Insert the adapter firmly onto the outlet pipe. Hold it in place for 30 seconds to ensure a strong bond.
5. Let it cure for 2 hours before connecting your sewer hose. For full strength, wait 24 hours before heavy use.
6. Attach your sewer hose as usual. The hose should slide on smoothly and lock securely.

💡 Pro Tip: Always wear gloves and work in a well-ventilated area when using ABS cement. The ideal working temperature is 65–85°F (18–29°C) for optimal adhesion.

Camco 39422 vs. Other Sewer Adapters: What’s the Difference?

Not all sewer fittings are created equal. Here’s how the Camco 39422 compares to common alternatives:

As you can see, the Camco 39422 offers superior reliability for those who prioritize sanitation and convenience.

Real User Experience: Case Study

Sarah T., a full-time RVer in Arizona, switched to the Camco 39422 after dealing with recurring leaks during summer heatwaves. “My old fitting would warp in 110°F weather,” she shared. “Since installing the Camco adapter, I haven’t had a single spill—plus, it’s so much quieter when flushing. No more ‘sloshing’ sounds from a loose connection.”

Her experience aligns with feedback from over 4,200 verified buyers on major retail sites, where the product maintains a 4.7/5 average rating.

Frequently Asked Questions (FAQ)

Q1: Can I use the Camco 39422 with a 1.5-inch or 2-inch sewer hose?
No. The Camco 39422 is specifically designed for 3-inch RV sewer outlets, which is the standard size for black water tanks in most motorhomes and travel trailers. Using it with smaller hoses requires an additional reducer fitting.

Q2: Is ABS plastic safe for sewage waste?
Yes. ABS (Acrylonitrile Butadiene Styrene) is non-toxic, chemical-resistant, and approved for drain-waste-vent (DWV) systems in residential and RV applications. It won’t degrade when exposed to human waste or common tank treatments.

Q3: Do I need professional help to install this?
Not at all. Most DIY-savvy RV owners can install it in under an hour. Just follow the steps above and use proper ABS cement. If you’re unsure, consult a local RV service center—but it’s rarely necessary.

Q4: Will this work with a sewer donut or seal?
Yes! The Camco 39422 has a smooth, flared end that pairs perfectly with standard sewer donuts or rubber seals used in campground inlets. This creates a double-sealed connection for maximum leak protection.

Q5: Can I remove it later if I change RVs?
Because it’s permanently glued, removal would require cutting the pipe. It’s intended as a long-term solution for a specific RV. If you plan to switch vehicles soon, consider a semi-permanent option instead.

Q6: Does it come with a warranty?
Camco offers a 1-year limited warranty against manufacturing defects. Keep your receipt and register your product on their website for faster support.

Conclusion: Is the Camco 39422 Worth It?

Absolutely. If you’re tired of messy, unreliable sewer hookups—or you live full-time in your RV—the Camco 39422 3″ Permanent Plumbing Adapter Sewer Fitting delivers peace of mind, durability, and hassle-free waste disposal. Backed by decades of Camco’s engineering expertise and real-world user satisfaction, it’s a small investment that pays off in cleanliness, convenience, and confidence.

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