Shires twin valve

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BassB
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Shires twin valve

Post by BassB » Tue Jul 17, 2018 9:35 pm

Does anyone know what is going on with these valves? I've been hearing whispers of them. I've also heard there was a prototype at ITF this year. Did anyone happen to snag some pictures or even play it?
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Burgerbob
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Re: Shires twin valve

Post by Burgerbob » Tue Jul 17, 2018 10:37 pm

Yup!





Basically, each valve is half of the pathway. This way they only have to turn 60 degrees (or less?) and the port sizes can be pretty large for a small valve size.
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JohnL
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Re: Shires twin valve

Post by JohnL » Wed Jul 18, 2018 1:11 am

Burgerbob wrote:
Tue Jul 17, 2018 10:37 pm
This way they only have to turn 60 degrees (or less?) and the port sizes can be pretty large for a small valve size.
Video


Post showing unfinished valve on Shires' Facebook page

You sure about that 60 degree part? The backside picture is too blurry to see any detail in the stop plates, but those look like single-passage 120 degree valves. Some double French horns (the King Eroica, for example) use a similar design, but with a one dual-plane valve rather than two single-plane ones.
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Burgerbob
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Re: Shires twin valve

Post by Burgerbob » Wed Jul 18, 2018 9:03 am

I'm not sure about it at all! I do wish the pictures were less blurry.
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