A clean black tank starts here. The Camco 39072 Dual Flush Rinser connects between your RV sewer outlet and dump hose, then attaches to a standard garden hose to blast water in two directions simultaneously -- breaking up solids, cutting odors, and flushing residue that accumulates after every dump. The break-resistant clear polycarbonate body lets you watch the rinse water run clear so you know the job is actually done.
Most RV owners dump their holding tank and move on -- but residual waste left on tank walls and in the drain line is the primary cause of persistent holding tank odors and sensor misreadings. The Camco Dual Flush Rinser addresses this directly by injecting a pressurized, dual-direction spray into the tank via the sewer outlet, the same port you use to dump.
Because the body is molded from clear, impact-resistant polycarbonate, you can watch the discharge water transition from murky to clear. That visual cue removes the guesswork and tells you exactly when to shut off the water -- saving time and conserving water compared to timed or blind flushing methods.
Simultaneous two-way jet action reaches more tank surface area and breaks up stubborn solids that a single-stream rinse misses.
Break-resistant polycarbonate housing lets you see rinse water color in real time so you know when flushing is complete.
Connects to any standard garden hose -- no special pump or pressure washer required. Use it at any campsite with a water hookup.
Installs between the RV sewer outlet and the dump hose. No drilling, no dedicated flush port needed on the tank itself.
After dumping your holding tank, thread the Dual Flush Rinser onto your RV sewer outlet fitting. Connect your dump hose to the outlet end of the rinser. Then attach a garden hose to the rinser's water inlet port. When you open the water supply, the internal nozzle configuration creates two opposing jets that spray up into the tank through the drain. The pressure agitates and loosens waste clinging to tank walls and sensor probes.
Let the rinse water discharge through the dump hose into the sewer connection. Watch the clear polycarbonate body -- when the water running through it turns clear, your tank is clean. Disconnect the garden hose, remove the rinser, and cap your sewer outlet as normal.
Residue buildup on tank level sensor probes is one of the most common causes of inaccurate tank-level readings -- sensors that always read full, or never read correctly. Regular rinsing with this tool helps keep the probes cleaner, improving the accuracy of your monitor panel over time.
Thorough post-dump rinsing also removes the organic material that anaerobic bacteria feed on, which is the root cause of holding tank odor. Combined with a quality tank treatment, regular use of the Dual Flush Rinser is the most effective way to maintain a fresh-smelling system.
For best results, follow up each rinse with a holding tank treatment to maintain the bacterial balance in your tank and prevent future odor and buildup. Camco offers a full range of holding tank treatments -- including TST and TST MAX formulas -- that are compatible with this rinsing routine.