Dometic 385319056 Toilet Vacuum Breaker – Chrome, Fits Dometic High Profile RV Toilets

Replace a worn or leaking vacuum breaker with the Dometic 385319056 Toilet Vacuum Breaker. This component is designed for use with Dometic high-profile RV toilets and helps protect your RV’s freshwater system by preventing backflow during the flush cycle.

The vacuum breaker allows air to enter the water line when the flush valve closes, ensuring that wastewater cannot siphon back into the freshwater supply. A faulty vacuum breaker can lead to leaks, improper flushing, or water spraying from the rear of the toilet, making replacement necessary to maintain proper toilet operation.

This chrome-finished vacuum breaker assembly provides a direct replacement for the original part used on compatible Dometic high-profile toilets.

Key Features

• Direct Replacement Part – Designed for Dometic high-profile RV toilets
• Prevents Backflow – Protects the freshwater system from contamination
• Chrome Finish – Durable and corrosion-resistant appearance
• Restores Proper Flush Operation – Helps eliminate leaks and spray issues
• OEM Dometic Replacement Part

Specifications

Common Signs You Need to Replace the Vacuum Breaker

A failing vacuum breaker can cause several noticeable issues:

• Water spraying behind the toilet during flushing
• Leaking around the rear of the toilet
• Irregular or weak flushing
• Water line backflow concerns

Replacing the vacuum breaker is often a simple repair that restores proper flushing and prevents water leaks.

Special Order Item

⚠ Special Order Item – Ships in approximately 7–14 days

This part is ordered directly from the manufacturer or supplier and may require additional processing time before shipment.

Frequently Asked Questions

What does a toilet vacuum breaker do?

A vacuum breaker prevents contaminated water from flowing back into the freshwater supply, protecting your RV’s plumbing system.

Where is the vacuum breaker located?

On most Dometic toilets, the vacuum breaker is located behind the toilet near the water supply line connection.

Will this part stop water spraying during flushing?

Yes. If water sprays from the back of the toilet when flushing, the vacuum breaker is often the component that needs replacement.

Is this an OEM Dometic part?

Yes. Part 385319056 is an OEM replacement part manufactured for Dometic toilets.