I'm working on an exotic project where I need a fast opening, high pressure valve. I'm not an expert in valves, obviously as you can see from this question. The required specs are below, I've been told there are no currently available solutions for my problem. If you have ideas please let me know.Gas: heliumOrifice: ideally ? inch, as small as ? inch would be okOperation: Starts closed with air at STP on one side, helium at 5000 psi on the other side; when I need to have the valve open an ideal opening time would be <1 millisecond.As you can tell we don't know if this is feasible, we're exploring. Ideally I would like to buy the valve because designing the valve isn't my goal, but if I have to design and build from scratch then so be it - oh well.You've written that we need "... to achieve the magnetic flux to pull the plunger...". Would it be possible to instead have a system where a magnet is used to actively keep the valve closed, and then short the load to the magnet, releasing the valve? I don't need to reclose quickly, and after it's been opened the pressure delta will be gone.Since we're only exploring right now it is fair to consider a wide range of operating conditions, including high supply currents and voltages.Also, we have no particular constraints on valve size, just that we need a large orifice because we need to move a lot of gas fast.

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