Re: valve

>
>
>>     Would ice formation ever be a problem on the main throttle valve?
>
>
>         Only if the laws of physics are altered to suddenly render 
> peroxide significantly compressible.
>
>         -p

We have iced solenoids during the gas blow down after peroxide is 
exhausted.  It might not be beyond the realm of possibility to form a skim 
of ice in a ball valve, but I'm pretty sure the motor wiouldn't have any 
problem breaking.

John Carmack