Vypart RV Toilet Valve Kit for Dometic 300/301/310/311/320/321 - Complete Replacement Valve with Seal & Filters

The Vypart 385311641 RV toilet valve kit is a complete replacement set engineered to restore reliable, leak-resistant flushing for Dometic 300, 301, 310, 311, 320 and 321 pedal toilets.

If your RV toilet is running, leaking, or failing to seal properly, replacing the valve assembly is often the most effective fix. This Vypart kit bundles the valve body, seal, mesh filters, hardware and a hose clamp so you have everything needed for a single-service repair. The components are molded from reinforced polymer and engineered with tighter threads and sealed joints to reduce leaks and resist cold-weather damage.

How will this kit stop leaks and odors?

The kit replaces worn valve parts and the rubber flange seal to re-establish a firm, water-tight connection between bowl and waste outlet. Improved joint molding and upgraded thread fit reduce common leak points.

• Includes a precision-fit rubber flange seal (385311658) to restore sealing surface
• Hexagonal rotary joint and sealed cap-to-body manufacturing prevent seepage
• Tighter, reinforced threads strengthen connections and reduce strain

Is the Vypart valve durable in cold weather?

The valve body is reinforced with glass-fiber polymer and designed to resist cracking from freezing temperatures. Factory-tested for sub-zero performance, it is less likely to fail in seasonal or high-altitude conditions where other valves can fracture.

• Glass fiber–reinforced polymer construction for extra strength
• Freeze-resistant design validated through durability testing
• Suitable for RVs used in cold climates when winterized correctly

What parts come in the kit and how easy is installation?

This replacement set is prepared to be a one-stop swap for common valve failures: the water valve, mesh filters, hose clamp, replacement seal and mounting screws are included. Installation is straightforward for anyone comfortable with basic RV plumbing and hand tools, and it avoids the need to source multiple parts separately.

• 1 x 385311641 toilet water valve, 1 x hose clamp, 2 x mesh filters
• 1 x 385311658 rubber flange seal and 2 mounting screws included
• Fits Dometic 300/301/310/311/320/321 pedal-flush models; not compatible with 210 or 510 models

How does the valve help save water without sacrificing performance?

The valve incorporates a dual-flow water control system that meters flush volume depending on waste type, conserving freshwater where possible while maintaining effective flushing for solids. Internally optimized channels direct water where it’s needed for efficient cleaning.

• Dual-flow control reduces water use for liquid waste
• Stronger flush profile available for solids to ensure bowl clearing
• Engineered internal flow paths for uniform distribution and cleaning

Who is this for? The Vypart 385311641 kit is intended for RV owners, repair technicians and DIYers who own Dometic 300/301/310/311/320/321 pedal toilets and need a reliable valve replacement. Choose this kit if you want a full set of matching components to address leaks, continuous flow, clogged filters, or cracked valve bodies—especially useful for those traveling in cold weather or wanting to reduce water waste. Do verify your toilet model before ordering, because this kit is not compatible with certain Dometic models such as the 210 or 510.