Dometic 385316906 Toilet Vacuum Breaker Kit -Fits Traveler Lite 110, 111, 210 and 300, 301, 310, 311, 320, 321 series, and MasterFlush 8700

Ensure safe and reliable operation of your RV toilet with the Dometic 385316906 Toilet Vacuum Breaker Kit, compatible with 300, 301, 310, 311, 320, and 321 models. This essential kit is designed to prevent backflow and protect your RV’s fresh water system from contamination, maintaining a hygienic and safe bathroom environment.

The vacuum breaker works by allowing air to enter the water line when negative pressure occurs, which stops dirty water from flowing back into the clean water supply. This simple but critical function helps prevent plumbing issues, odors, and potential health hazards in your RV.

Constructed from durable, corrosion-resistant materials, the Dometic 385316906 kit is built for long-lasting performance, even under frequent use during travel. Installation is straightforward, allowing RV owners to quickly replace a worn or faulty vacuum breaker without professional assistance.

By installing this OEM-quality replacement, you ensure that your RV toilet operates safely and efficiently while protecting your plumbing system. The Dometic 385316906 Toilet Vacuum Breaker Kit is an indispensable part of regular RV toilet maintenance, helping you enjoy clean, worry-free restroom use on every trip.

Key Features

• OEM replacement vacuum breaker (does not include hand sprayer)
• Protects against backflow and cross-contamination
• Compatible with multiple Dometic toilet series: Traveler Lite, Traveler, and MasterFlush
• Durable, corrosion-resistant construction for long-term use
• Easy to install using existing water lines and fittings
• Ensures reliable toilet flushing performance in RV and marine applications

Compatible Series & Models

• Traveler Lite: 110, 111, 210
• Traveler / Standard: 300, 301, 310, 311, 320, 321
• MasterFlush: 8700 Series

Check your existing vacuum breaker style to confirm compatibility before ordering.

Replaces / Also Known As

• Dometic 385316906 Vacuum Breaker Assembly
• Dometic Toilet Anti-Backflow Kit
• RV Toilet Water Backflow Preventer
• OEM Dometic Toilet Vacuum Breaker

What’s Included

• 1 Vacuum breaker assembly (no hand sprayer)
• Standard fittings for connection to toilet water lines

Installation

• Turn off water supply.
• Disconnect the old vacuum breaker from the toilet water line.
• Install the new vacuum breaker in the same location, securing fittings.
• Turn on water supply and test for leaks.

No specialized tools required; typical installation takes 5–10 minutes.

Frequently Asked Questions

Q: Does this kit include a hand sprayer?
No, this kit includes only the vacuum breaker assembly.

Q: Will it fit all Dometic Traveler Lite and Traveler toilets?
It fits Traveler Lite 110, 111, 210 and Traveler 300, 301, 310, 311, 320, 321 series, as well as MasterFlush 8700 toilets.

Q: Is this an OEM part?
Yes, this is the genuine Dometic replacement vacuum breaker.

Q: Can it be used in marine applications?
Yes, it is designed for both RV and marine toilets.