
Connecting a Camco Rhino 21-gallon waste tank is a straightforward process that ensures efficient and mess-free RV waste management. To begin, ensure your RV’s sewer outlet is clean and ready for attachment. Position the Rhino waste tank on a stable, level surface near your RV, and extend the sewer hose from the RV’s outlet to the tank’s inlet, securing it with a bayonet or threaded fitting to prevent leaks. Next, attach the tank’s built-in wheels and handle for easy maneuverability. Before use, inspect all connections for tightness and ensure the tank’s vent cap is open to allow airflow. When full, simply detach the hose, secure the tank’s caps, and transport it to a dump station for emptying. Following these steps will help you effectively connect and use your Camco Rhino 21-gallon waste tank for hassle-free RV waste disposal.
| Characteristics | Values |
|---|---|
| Tank Capacity | 21 Gallons |
| Material | Durable polyethylene |
| Compatibility | Fits 3" RV waste outlets |
| Hose Connection | Includes 3" bayonet fitting for secure attachment |
| Vent Cap | Integrated vent cap to prevent odors and spills |
| Handles | Molded side handles for easy carrying and maneuvering |
| Wheels | No built-in wheels (requires separate tow kit if needed) |
| Dimensions | Approximately 24" x 16" x 14" (L x W x H) |
| Weight (Empty) | ~10 lbs |
| Weight (Full) | ~177 lbs (21 gallons of water weighs ~167 lbs) |
| Additional Accessories | May require a tow kit or hose for extended reach (sold separately) |
| Installation Steps | 1. Align tank with RV waste outlet. 2. Secure bayonet fitting. 3. Open vent cap. 4. Drain waste. |
| Maintenance Tips | Rinse thoroughly after each use and store in a dry place. |
| Warranty | Limited manufacturer warranty (check Camco for details) |
| Price Range | $50 - $70 (varies by retailer) |
| Availability | Available at RV supply stores, Amazon, and Camco's official website |
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What You'll Learn
- Prepare the Rhino Tank: Clean, inspect seals, attach hose, and secure fittings before connecting
- Connect to RV Outlet: Align tank inlet, attach hose securely, and ensure tight seal
- Use Adapter Fittings: Match RV outlet size, attach adapter, and connect tank hose properly
- Secure Tank During Towing: Use mounting brackets, straps, or cradles to prevent movement
- Empty and Clean Tank: Attach rinse hose, drain at dump station, and sanitize thoroughly

Prepare the Rhino Tank: Clean, inspect seals, attach hose, and secure fittings before connecting
Before connecting your Camco Rhino 21-gallon waste tank, proper preparation ensures a leak-free and efficient system. Start by thoroughly cleaning the tank to remove any residual waste or debris. Use a mixture of mild detergent and water, followed by a rinse with a disinfectant solution to eliminate odors and bacteria. A clean tank not only prevents clogs but also extends the life of the seals and fittings.
Inspecting the seals is a critical step often overlooked. Over time, seals can degrade, crack, or warp, leading to leaks. Examine the tank’s inlet and outlet seals for signs of wear, ensuring they are pliable and intact. If any seal appears damaged, replace it immediately. Camco offers compatible replacement seals, and investing in this small detail can save you from messy mishaps down the road.
Attaching the hose correctly is equally important. Use a high-quality, reinforced sewer hose designed for RV waste systems. Secure the hose to the tank’s outlet with a reliable hose clamp, ensuring a snug fit. Avoid overtightening, as this can damage the fittings. For added protection, consider using a hose support system to maintain proper slope and prevent kinking, which can impede waste flow.
Finally, securing all fittings is the last line of defense against leaks. Check that all threaded connections are tightened to the manufacturer’s specifications, using a wrench if necessary. Apply a thin layer of pipe thread sealant to threaded fittings for an extra seal, but avoid over-application, as excess sealant can clog the system. Once everything is secure, perform a quick test by filling the tank with water to check for leaks before actual use. This proactive approach ensures a hassle-free connection and peace of mind during your travels.
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Connect to RV Outlet: Align tank inlet, attach hose securely, and ensure tight seal
Connecting your Camco Rhino 21-gallon waste tank to an RV outlet is a straightforward process, but precision is key to avoiding leaks and ensuring efficient waste disposal. Begin by locating the tank inlet and the RV outlet, ensuring both are clean and free of debris. Proper alignment is crucial; the tank inlet should be positioned directly over the RV outlet to facilitate a smooth connection. Misalignment can lead to spills or damage, so take a moment to double-check before proceeding.
Once aligned, attach the hose securely to both the tank inlet and the RV outlet. Use a high-quality sewer hose designed for RV waste systems, as inferior materials can degrade over time and cause leaks. Tighten the hose connections by hand, then use a wrench to give them an additional quarter turn for a snug fit. Be cautious not to overtighten, as this can crack the fittings or damage the seals. A balanced approach ensures a tight seal without compromising the integrity of the components.
Ensuring a tight seal is the final, critical step in this process. Inspect the connection points for any gaps or loose fittings, and apply a lubricant like silicone grease to the seals if necessary. This enhances flexibility and creates a more reliable barrier against leaks. Test the connection by gently tugging the hose to confirm it’s secure. If you notice any resistance or movement, recheck the alignment and tighten the fittings again. A properly sealed connection not only prevents odors and spills but also extends the life of your waste management system.
Practical tips can further streamline this task. For instance, using a clear elbow fitting allows you to monitor waste flow and detect clogs early. Additionally, storing the hose in a dedicated compartment when not in use keeps it clean and prolongs its lifespan. By focusing on alignment, secure attachment, and a tight seal, you’ll master the connection process and maintain a hassle-free RV waste disposal system.
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Use Adapter Fittings: Match RV outlet size, attach adapter, and connect tank hose properly
Connecting your Camco Rhino 21-gallon waste tank starts with ensuring compatibility between your RV’s outlet and the tank’s hose. RV waste outlets vary in size, typically ranging from 3 inches to 3.5 inches in diameter. The Camco Rhino tank comes with a standard 3-inch hose, but if your RV’s outlet is larger, you’ll need an adapter fitting to bridge the gap. Adapters are available in bayonet, threaded, or friction-fit styles, depending on your RV’s connection type. Always measure your RV outlet before purchasing to avoid mismatches.
Attaching the adapter is straightforward but requires precision. Begin by cleaning both the RV outlet and the adapter to ensure a secure fit. If using a bayonet-style adapter, align the lugs with the slots and twist clockwise until it locks into place. For threaded adapters, apply a small amount of pipe thread sealant to the threads to prevent leaks, then screw it on tightly by hand or with a wrench. Friction-fit adapters rely on a snug fit, so ensure the adapter seats firmly without gaps. Over-tightening can damage the components, so use moderate force.
Once the adapter is securely attached, connect the Camco Rhino tank’s hose. The hose end should fit snugly into the adapter’s outlet port. If the hose feels loose, use a hose clamp to secure it in place. Tighten the clamp with a screwdriver, ensuring it’s firm but not overly constricted, as this can damage the hose. Double-check all connections for leaks by running water through the system or using a pressure test kit. A properly connected hose will prevent spills and odors during waste disposal.
Practical tips can streamline this process. Keep a set of wrenches, hose clamps, and thread sealant in your RV toolkit for quick access. If you frequently switch between different waste tanks or adapters, label each component for easy identification. For added security, consider using a hose support system to prevent strain on the connection points, especially when the tank is full. Regularly inspect adapters and hoses for wear or cracks, replacing them as needed to maintain a reliable setup.
In conclusion, using adapter fittings to match your RV outlet size, attaching the adapter correctly, and connecting the tank hose properly are critical steps in setting up your Camco Rhino 21-gallon waste tank. By taking the time to measure, clean, and secure each component, you’ll ensure a leak-free and efficient waste disposal system. This approach not only protects your RV but also enhances your overall camping experience by minimizing maintenance hassles.
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Secure Tank During Towing: Use mounting brackets, straps, or cradles to prevent movement
Securing your Camco Rhino 21-gallon waste tank during towing isn’t just a precaution—it’s a necessity. Unsecured tanks can shift, causing damage to your RV, the tank itself, or even creating hazardous spills. Mounting brackets, straps, or cradles are your first line of defense against these risks. Each option offers unique benefits, but the key is to choose a method that fits your setup and ensures stability.
Mounting brackets provide a semi-permanent solution, ideal for those who frequently tow their waste tank. These brackets are typically bolted to the RV’s frame or a designated mounting area, creating a secure cradle for the tank. Installation requires basic tools like a drill, wrench, and measuring tape. Ensure the brackets are aligned with the tank’s dimensions and fastened tightly to prevent wobbling. For added security, use stainless steel hardware to resist corrosion from road debris and weather exposure.
If permanence isn’t your preference, straps offer a flexible alternative. Ratchet straps or tank-specific tie-downs can be tightened around the tank and anchored to your RV’s cargo rails or D-rings. This method is adjustable, making it suitable for various tank sizes and towing conditions. When using straps, avoid over-tightening, as excessive pressure can deform the tank. Instead, aim for a snug fit that minimizes movement without compromising the tank’s integrity.
For a balance between stability and ease of use, cradles are a popular choice. These U-shaped holders are designed to conform to the tank’s shape, providing a snug fit without the need for drilling. Cradles often come with built-in straps or clips for additional security. They’re particularly useful for uneven terrain, as they distribute weight evenly and reduce the risk of tipping. Look for cradles made from durable materials like polyethylene or coated steel to withstand the rigors of towing.
Regardless of the method you choose, regular inspections are crucial. Check mounting brackets for rust or loose bolts, inspect straps for fraying or wear, and ensure cradles remain securely attached to your RV. A quick pre-trip check can save you from costly repairs or messy accidents down the road. By investing time in proper tank securing, you’ll enjoy peace of mind and a safer towing experience.
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Empty and Clean Tank: Attach rinse hose, drain at dump station, and sanitize thoroughly
Emptying and cleaning your Camco Rhino 21-gallon waste tank is a critical step in maintaining hygiene and functionality, especially after extended use. Begin by attaching a rinse hose to the tank’s outlet valve, ensuring a secure connection to prevent leaks. Position the hose so it directs waste into the dump station’s inlet, typically a grated or open drain designed for this purpose. Open the valve slowly to allow gravity to drain the tank’s contents, monitoring the flow to avoid overflow or spillage. This process not only removes waste but also clears residual debris that could clog the system over time.
Once the tank is empty, the cleaning phase becomes paramount to eliminate odors and prevent bacterial buildup. After draining, close the valve and detach the hose from the dump station. Reattach the rinse hose to a freshwater source, ensuring it’s compatible with potable water to avoid contamination. Flush the tank thoroughly by running water through it for at least 2–3 minutes, agitating the interior to dislodge any remaining particles. For stubborn residue, consider adding a tank cleaner specifically formulated for RV waste systems, following the manufacturer’s dosage instructions—typically 1 cup of cleaner per 10 gallons of water.
Sanitization is the final step to ensure the tank is safe for future use. After rinsing, drain the tank again at the dump station, then prepare a sanitizing solution using a mixture of 1 cup of household bleach per gallon of water. Pour this solution into the tank and let it sit for at least one hour, allowing the bleach to neutralize bacteria and odors. Afterward, flush the tank once more with freshwater to remove any traces of bleach, as prolonged exposure can degrade the tank’s materials. This meticulous process ensures the tank remains clean, odor-free, and ready for the next trip.
Practical tips can streamline this routine: always wear gloves and use a dedicated hose for waste management to avoid cross-contamination. Keep a separate set of tools, like a wrench for tight valves, in your RV toolkit. For winter storage, add a tank deodorizer to prevent freezing and maintain freshness. By treating this process as a routine rather than a chore, you’ll extend the life of your Camco Rhino tank and ensure a more pleasant RV experience.
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Frequently asked questions
To connect the Camco Rhino 21-gallon waste tank, attach the included sewer hose to the tank's outlet and secure it with the hose clamp. Then, connect the other end of the hose to your RV's waste outlet, ensuring a tight seal to prevent leaks.
You will need a sewer hose (included with the tank), a hose clamp, and optional accessories like gloves, a sewer hose support, and a tank rinser for easier setup and maintenance.
Yes, the Camco Rhino 21-gallon waste tank is compatible with standard RV waste outlets. Ensure the sewer hose fits securely to your RV's outlet and use a hose adapter if necessary for a proper connection.











































