(1) Pressure Adjustment Range: This refers to the adjustable range of the pressure regulator's output pressure P2, within which a specified accuracy must be achieved. The pressure adjustment range is mainly related to the stiffness of the adjusting spring.
(2) Pressure Characteristics: This refers to the characteristic of output pressure fluctuation caused by input pressure fluctuations when the flow rate g is constant. The smaller the output pressure fluctuation, the better the characteristics of the pressure regulator. The output pressure must be lower than the input pressure by a certain value to remain essentially unchanged with changes in input pressure.
(3) Flow Characteristics: This refers to the characteristic of output pressure changing with output flow rate g when the input pressure is constant. The smaller the change in output pressure when the flow rate g changes, the better. Generally, the lower the output pressure, the smaller its fluctuation with changes in output flow rate.