Dometic RV Toilet Valve Replacement Kit

Upgrade your Dometic 300/310/320 series RV toilet with this OEM-compatible replacement kit, engineered for precision fit and all-season reliability. Designed as a direct replacement for the 385311641 water valve, this kit ensures seamless integration with Dometic 310, 300, 320, 311, and 321 models, as well as Sealand pedal-flush toilets—not compatible with 506/706/709/806/808 series. Built to withstand freezing temperatures down to **-20°F (-29°C)**, this valve features ultrasonic-welded joints and a reinforced polymer body that resists corrosion, mineral buildup, and wear, preventing leaks and extending the life of your RV’s water system.

Say goodbye to frustrating leaks and inefficient flushes with this leak-proof system. The kit includes a precision-molded flush ball seal (385311658), high-density seals, and stainless steel hose clamps that eliminate common piston leaks. The extended guide thread on the hose connection simplifies installation—just hand-tighten and add a ½-turn with pliers—while preventing cross-threading or over-tightening damage. Every valve is pressure-tested for durability. The kit also comes with tool-free mesh filters to prevent clogs, allowing you to quickly rinse debris-caused blockages without replacing the valve. With all necessary parts included, installation takes just 5 minutes—no professional skills required. Simply remove the old valve, secure the new one with the included screws, and reconnect your water line for a hassle-free upgrade.