The basic properties of the gas valve:

(1) pressure range: it refers to the valve output pressure P2 adjustable range, within this range required to achieve the required accuracy. Pressure range regulator spring stiffness mainly related.

(2) Pressure characteristics: it refers to the flow of g is constant, because the input pressure fluctuations caused by pressure fluctuations in the output characteristics. Output pressure fluctuation is smaller, the better the valve characteristics. Output pressure must be less than the input pressure - it does not substantially set value changes with the input pressure.

(3) Flow characteristics: it refers to the input pressure - time, the output pressure with output flow g and change the hold of. G When the flow changes, the output pressure changes as small as possible. Usually the lower the output pressure, which changes with fluctuations in the output flow is smaller.