Seek a high-temperature and high-pressure control valve
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The pressure before the valve is 11 MPa, and the pressure after the valve is 0.02 MPa. Is there an angular pneumatic version available? The original valve was a manual stop valve; I tried to install an electric actuator, but it didn’t work – the electric actuator’s response was rather slow, with a minimum response time of around 1.5%
With such a high pressure difference, pneumatic systems are likely not suitable – the torque is too high and pneumatic systems cannot handle it. Electric systems are generally used in such cases; for faster response times, hydraulic systems can also be employed, but there are few options of hydraulic systems available on the market these days. Moreover, with such a high pressure difference, the unbalanced forces are significant. Sleeve valves are usually used in such situations, and it should be possible to implement this solution.
0.02 MPa, or is there a high-pressure angle valve that can rotate more than 20 turns?
Will a labyrinth-type pneumatic control valve work?
A labyrinth design should work, as labyrinths are somewhat similar to sleeves in that both are designed to reduce unbalanced forces; labyrinths involve multi-stage pressure reduction, which may yield even better results.
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