As the pressure in the evaporator decreases, the valve opens and allows more refrigerant to flow through it. As the pressure increases, the valve closes and allows less refrigerant to flow through it.

For the gas valve actuator, a combination of motor technology, motion type, and positioning system will determine the overall motion system’s complexity and costs. Options for the motion system are: ...

Arduino code to calibrate and control the needle valves in the plumbing system. The needle valves control filling and venting of N2O on the rocket. The valve is opened and closed by a geared DC motor ...