Automatic pneumatic valve common failure analysis and prevention measures 3)

A nominal pressure relief pneumatic valve, adjust the spring there are a few, such as nominal pressure for kilogram per square centimeter, adjusting spring - kilogram per square centimeter, kg/cm2, - kilogram per square centimeter of three, if after the pneumatic valve pressure just - kilogram per square centimeter, but spring is - kilogram per square centimeter of that kind of, don't the pneumatic valve pressure is adjustable.