An old friend of mine had a company near Cambridge which made super-fast solenoid valves - <<1mS.
I designed some electronics to drive them.
I'll see if I can find out if they're still going - he's long retired.
They weren't cheap.
And freely available are electrically controlled injectors as used in modern cars and lorries - both petrol and diesel engines ... pretty quick. Ditto the driver chips.
Visit your local scrappie.
Allan