In a sealed corrugated vessel, the volume and pressure of the gas change so slowly that at any moment of time the state of the thermodynamic

In a sealed corrugated vessel, the volume and pressure of the gas change so slowly that at any moment of time the state of the thermodynamic system (gas) can be considered equilibrium. What simple mechanism is used to ensure the equilibrium state of the thermodynamic system in a given installation?

In this installation, the equilibrium state is ensured by a screw.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.