Stephen wrote:
> On 11/05/2010 10:33 PM, Orchid XP v8 wrote:
>> Think about how a transistor works: You have one circuit that controls
>> another. So how hard would it be to rig up a valve where pressure from
>> one pipe moves the valve allowing (or blocking) water from flowing
>> through a seperate circuit? In principle it ought to be pretty trivial.
>> (Of course, making a valve that actually works well in practise probably
>> requires far more equipment than I personally have...)
> 
> 
> You probably want a three port shuttle valve.

That sounds about right.

> Did you know that using 
> pneumatics you can make amplifiers, integrators, switches etc.?

I don't see why not... although I would imagine achieving good linearity 
might be tricky.

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