TubeNet

I'm looking for a rotary valve to use on my Eb tuba project as a 5th valve. The small side of the main tuning slide is 0.660 bore and the large side is about 0.710. If you have a rotor with either of these bore sizes, please let me know. If you have the smaller size, I should have tubing for it, if you have the larger size, I will need tubing as well if you have any, but I'd be happy just to start with a valve.

I have the old, top action, three valve section I removed from the Eb tuba I'm refurbishing if that interests you as a trade option. Thanks!

I've seen the elephant's posts about those and thought the same thing. The ports are slanted on those if I remember right, but if anyone had one I'd take it!

My calipers are reading 0.695 ID on the ferrule I could use and 0.685 ID on the MTS now... I don't know where I got 0.660 from, unless I was measuring the inner slide for that. Either way, there you go. Thanks!

Ok, then the measurements I gave you are correct. The small side of the main tuning slide was 0.685.

No worries.

I've posted some pictures for clarity below. If you have a rotary valve whose ports will fit *inside* either of these tubes, please let me know. Thanks!

The small side of the main tuning slide:



The large side of the main tuning slide:



Thanks folks!

Hi Jordan, Please contact me by email at proscientific AT verizon DOT net. No PM please. Paul.

I was able to find one that will work on the large side of the tuning slide. Thanks folks!