Thetford Vacuum Breaker For Aqua Magic Permanent Toilets

The Thetford 34122 Vacuum Breaker is a genuine replacement part designed for Aqua Magic Lite, Plus, Style II, and Residence RV toilets. This component prevents backflow of contaminated water into the fresh water supply, ensuring safe, hygienic operation of your RV plumbing system.

If your toilet is experiencing water flow issues, back-siphoning, or leaks due to a faulty vacuum breaker, installing the 34122 restores proper function and protects your RV’s water supply. Manufactured to Thetford’s high-quality standards, this vacuum breaker is durable, easy to install, and precisely engineered for a perfect fit.

Maintain the safety, hygiene, and reliable performance of your RV toilet with the Thetford 34122 Vacuum Breaker — an essential component for Aqua Magic Lite, Plus, Style II, and Residence permanent toilets.

Features & Benefits

• OEM vacuum breaker assembly designed specifically for multiple Aqua-Magic toilet series
• Prevents backflow contamination by maintaining proper system air gap
• Restores consistent bowl fill and flush performance
• Durable construction engineered for RV water pressure and vibration
• Eliminates leaks caused by cracked or worn vacuum breaker bodies
• Simple, straightforward replacement requiring basic tools

Fits These Models

Compatible with:

• Aqua-Magic Lite
• Aqua-Magic Plus
• Aqua-Magic Style II (High & Low Profile)
• Aqua-Magic Residence series toilets

Confirm toilet model before ordering to ensure compatibility.

Common Issues Solved

Replacing the 34122 vacuum breaker can correct:

• Water leaking from the back of the toilet during flushing
• Bowl overfilling or inconsistent water level
• Backflow risk into RV fresh water system
• Gurgling noises during flush
• Water not shutting off properly after flushing

Replaces / Also Known As

• Thetford 34122 Vacuum Breaker
• RV Toilet Backflow Preventer
• Water Supply Anti-Siphon Valve
• OEM Vacuum Breaker Assembly for Aqua-Magic Toilets

What’s Included

• 1 Vacuum breaker assembly
• Fittings integrated into the unit (based on model design)

Installation Overview

1. Turn off RV water supply and relieve pressure by flushing the toilet.
2. Access the vacuum breaker (typically mounted behind or on the back of the toilet).
3. Disconnect water lines and remove the old vacuum breaker.
4. Install the new 34122 breaker, ensuring proper orientation of inlet and outlet.
5. Reattach water lines securely.
6. Turn water back on and test for leaks and proper flush performance.

Typical installation time: 10–20 minutes.

Frequently Asked Questions

Q: How do I know my vacuum breaker is failing?
Common signs include water spraying or leaking from the back during a flush, bowl overfilling, or inconsistent water shutoff.

Q: Will this fit Bravura or Aqua-Magic IV/V?
No — the 34122 fits Lite, Plus, Style II, and Residence toilets only.

Q: Is this an OEM Thetford component?
Yes, this is the official Thetford factory replacement vacuum breaker.

Q: Can I install this without removing the toilet?
Often yes — on most models the vacuum breaker is accessible from behind or under the shroud.

Q: How often does a vacuum breaker need replacement?
Typically every few years, or whenever leaking or backflow symptoms appear.