Camco Dual Flush Pro RV Holding Tank Rinser — 3" Gate Valve, Reversible High‑Pressure Flow (Made in USA)

The Camco Dual Flush Pro Holding Tank Rinser is a compact, USA-made RV accessory that flushes and cleans black and grey water tanks plus sewer hoses using a reversible high-pressure flow and a 3" gate valve.

Maintaining sanitary holding tanks and a clog-free sewer hose is one of the least enjoyable parts of RV ownership — the Dual Flush Pro makes that chore faster and more reliable. Engineered to fit most 3" RV drain outlets, this unit gives you control over how water moves through your system so you can rinse interior tank walls, dislodge debris, and flush contaminants from hoses without a built-in tank-flush feature.

How does the Dual Flush Pro remove buildup from RV holding tanks?

The Dual Flush Pro uses reverse-flow rinsing to force high-pressure water against tank surfaces and out through the sewer hose, breaking up solids and scum. Switching the 3" gate valve changes flow direction so you can target the black tank, gray tank, or hose for the best cleaning effect.

• Reverse flush valve sends water back into tanks to dislodge deposits.
• High-pressure flow helps remove stuck matter from interior surfaces.
• Gate valve isolates tanks to prevent cross-contamination during rinsing.

Will this unit fit my RV drain outlet and sewer hose?

The Dual Flush Pro is built around a standard 3" RV gate valve, which is compatible with the majority of motorhomes, travel trailers, campers, and fifth wheels. It connects easily to existing sewer hose fittings and works well for rigs that lack a factory-installed black tank flush port.

• Standard 3" gate valve fits most RV drain outlets.
• Attaches to common RV sewer hose fittings and grey-water hoses.
• Designed for universal compatibility across many RV models.

How do I operate the Dual Flush Pro for both normal emptying and hose cleaning?

Operation is straightforward: attach the rinser to the drain outlet, secure your sewer hose, and use the gate valve to select the desired flow path. In the closed position, the device keeps waste out of your hose so you can fill and rinse tanks; opening the valve directs flow into the hose for backflushing and cleaning.

• Connect rinser to RV drain and secure sewer hose with an RV fitting.
• Use closed valve to flush tanks without sending waste into hose.
• Open valve to channel water through hose for effective backflushing.

What materials and features ensure this unit lasts on the road?

Camco built the Dual Flush Pro from durable plastics and a heavy-duty gate valve to withstand repeated use and exposure to wastewater. The clear adapter is made from tough polymer to resist cracking while allowing you to visually confirm when water runs clean.

• Robust gate valve resists wear from repeated opening and closing.
• Unbreakable polymer clear adapter gives visual confirmation during rinses.
• Quality construction designed for long-term RV use and rough conditions.

Who this is for: RV owners, full-time travelers, and occasional campers who want a practical, durable solution for cleaning holding tanks and sewer hoses. If your rig lacks a factory tank-flush system or you need an efficient way to break up clogs and rinse hoses, the Camco Dual Flush Pro delivers straightforward operation, visual assurance of cleanliness, and long-lasting construction.