What is the purpose of a pressure differential valve?

The purpose of a pressure differential valve is to maintain equal pressure between liquid and vapor phases within a system. This balance is crucial in various applications, particularly in systems dealing with phase changes, such as refrigeration or distillation processes. By ensuring that the pressure remains consistent between these two states, the valve helps optimize performance and prevent issues such as boil-off, which can lead to inefficiencies or even system failures. The design allows the valve to adjust dynamically to variations in pressure, ensuring that the system operates smoothly and effectively in maintaining the desired pressure equilibrium.