pneumatic solenoid valve seal material re from Germany,Japan 4V100-400, 3V100-300 Voltage:AC110V, AC220V, ... by micro-electrical signals. It is small in size,large flow,beautiful appearance,superior performance,change tropism is good and has ... a variety of specifications available for selection. solenoid valve Pnuematic control valves include many series of types, such as 3V1,3V100,3A100 ...