Yes, Willson makes a Rotax valve in 20.5mm. They are good valves but not cheap. (I think I paid about US450 just for the valve without any tubes)
I have done and am doing a similar project.
Please let me know if you need anything here in Switzerland.
Tim Sullivan timswisstuba@bluewin.ch" target="_blank" target="_blank
Rotary Valve Information Search
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Timswisstuba
- pro musician
- Posts: 365
- Joined: Sat Apr 14, 2007 5:12 am
- Location: Switzerland