Will The Replacement Water Valve TH78SA Fit A Thetford Aqua-Magic Style II Model 42050 Toilet?
Updated 10/27/2026 | Published 10/25/2026
Question:
I have model 42050. The product description includes that model for these parts. The video however does not include that model number. Will these parts fir model 42050?
asked by: Paul G
Expert Reply:
Hey Paul, thanks for reaching out! Yes, the Replacement Water Valve # TH78SA is confirmed to fit your Thetford Aqua-Magic Style II toilet, model 42050. While the video doesn't specifically mention your model number, the replacement valve is compatible with it, so you're good to go!
Are you replacing the valve because of a leak, or has your toilet stopped filling with water?
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Product Page this Question was Asked From
Replacement Water Valve for Thetford Aqua-Magic Style II RV Toilet - Restores Flush Power - Qty 1
- Accessories and Parts
- RV Toilet
- Valves
- Water Valve
- Thetford
more information >
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on Accessories and Parts
Paul G.
10/26/2026
On 1 toilet, the water wouldn’t stop flowing. On another, the stud that engages the foot pedal and opens the ball valve to flush broke broke. This package seems to have the parts to fix both toilets so I will order 2.