The Camco Rhino PRO sewer adapter (part 39730) gives you a fast, leak-proof connection at campground dump stations without the guesswork. The transparent 90-degree elbow lets you watch flow in real time so you know exactly when your grey and black tanks are fully empty -- no overflows, no second-guessing. An airtight bayonet-style seal blocks sewer gas from escaping, and the large easy-connect handle is comfortable even with work gloves on. Works on standard 3.5-inch and 4-inch sewer inlets, including damaged or threadless pipes where other adapters fail.
Campground sewer connections are notoriously inconsistent. Threads get stripped, pipes are worn smooth, and fittings vary between 3.5-inch and 4-inch standards. The Rhino PRO adapter is built to handle all of it. Its flexible, over-sized collar seats firmly over rough or threadless pipe ends and locks down without requiring matching threads, giving you a secure, gas-tight seal regardless of the condition of the pedestal.
The clear elbow is the standout feature for practical dumping. Instead of waiting and guessing, you watch the flow go clear and know the tank is empty. Combined with the odor-blocking seal, this adapter keeps the entire process clean and fast from hookup to disconnect.
Transparent body lets you monitor flow and confirm tanks are fully empty before disconnecting -- eliminates guesswork and overflow risk.
Bayonet-style locking collar creates a gas-tight connection that blocks sewer odors from escaping during and after the dump cycle.
Oversized flexible collar seats securely over stripped, worn, or threadless sewer inlets where standard threaded adapters cannot grip.
Ergonomic grip gives you leverage for a secure one-handed connection even while wearing disposable gloves -- standard for sanitary dumping.
Many RV dump adapters are designed for only one pipe diameter, leaving you hunting for the right fitting when you pull into a new campground. The Rhino PRO 39730 accommodates both 3.5-inch and 4-inch sewer inlet openings -- the two most common sizes at campgrounds, RV parks, and dump stations across North America. The adapter pairs with standard Rhino sewer hose terminations using the Camco bayonet lug interface, compatible with Rhino Flex, Rhino TOTE, and most third-party hoses that use the industry-standard sewer hose end fitting.
The Rhino PRO adapter is engineered for repetitive connection and disconnection cycles over a full season. The housing is impact-resistant and the locking collar is designed to hold its seat through dozens of dump cycles without developing slop or leaks. At approximately 2 lbs., it is easy to carry in a sewer kit bag alongside your hose.