... spring with it makes the driving plat move up to drive the spring board,and actuate the jumper spring to ... difference (Mpa)Inlet without screwExhaust joints screwGYD20-20220V/380V200.2-1.00.2-0.4G3/8"M10×1Pressure can be adjusted according to ... years' experience in producing and exporting low voltage electricity, including ac contactor, air pressure switch, magnetic starter, motor protector, starter ...