Description
Universal RV Toilet Floor Flange – Fits Dometic, Thetford & Most RV Toilets
Replace a cracked, broken, or worn floor flange with this genuine Valterra RV toilet floor flange, featuring 3" female pipe threads and a 4" diameter opening. Made from durable ABS plastic, this flange threads directly onto your RV's existing black-water pipe and provides a solid, universal mounting base compatible with virtually any RV toilet — Dometic, Thetford, or otherwise. If your toilet is wobbly, leaking at the base, or your original flange has cracked or broken free from the floor, this flange restores a secure, reliable connection between your toilet and waste plumbing.
Fits/Compatible With:
- Universal fit — compatible with most RV toilet brands, including Dometic and Thetford
- Commonly used to install or replace flanges on Dometic 310, 320, and other 300-series toilets
- Also compatible with Thetford Aqua-Magic and other pedestal-mount toilets requiring a 3" female-threaded flange
Specifications:
- 3" Female Pipe Thread (NPT), 0.541" usable female threads
- 4" diameter opening (holds toilet wax ring/gasket)
- 3-1/2" diameter gasket-seating area
- Pre-drilled holes for securing flange to floor and toilet to flange
- Material: Durable ABS plastic
Key Features:
- Universal fit for most RV toilet installations
- Durable, long-lasting ABS plastic construction
- Pre-drilled mounting holes for quick, hassle-free installation
- Threads directly onto your RV's existing black-water plumbing pipe
How to Confirm This Is the Right Flange for You
Check your existing pipe or old flange to determine male vs. female threading:
- If your pipe has male threads (visible threads on the outside of the pipe), you need this female-threaded flange (T05-0784).
- If your pipe has female threads (visible threads on the inside of the pipe), you'll need the male-threaded version instead (part #T05-0782).
If you're unsure, remove your old flange and inspect the threading, or send us a photo and we'll help confirm which version you need.
Frequently Asked Questions
Will this fit my Dometic toilet?
Yes — this is a universal replacement flange compatible with most RV toilets that use a standard 3" threaded connection, including many Dometic 300-series and other pedestal-mount toilets.
Will this fit my Thetford toilet?
Yes — this flange is commonly used as a replacement for Thetford Aqua-Magic and similar models that use a standard 3" threaded floor connection.
Do I need anything else to complete installation?
Yes — you'll also need a toilet floor gasket with hold-down bolts (such as Valterra's Q23653VP) to complete the seal between your toilet and this flange.
How do I know if I need the male or female version?
Check the threading on your existing pipe. If the pipe has male threads on the outside, you need this female-threaded flange. If the pipe has female threads on the inside, you need the male-threaded version (T05-0782) instead.
My old flange screws off the pipe — will this work the same way?
Yes — if your current flange unscrews from the pipe, this threaded replacement will install the same way, screwing directly onto your existing pipe.
Is this a direct OEM replacement, or a universal part?
This is a universal aftermarket replacement, not an OEM part from Dometic or Thetford — but it's widely used and compatible across most standard RV toilet installations.
What's the usable thread length on this flange?
This flange has 0.541" of usable female threads — worth double-checking against your existing pipe if you have a specific depth requirement.
Warranty Information
