1: 2-way normally closed pneumatic valve solenoid valve, Closed when de-energized, open when energized.2: Serialized pneumatic valve, small in size, large flow rate, widely use3: Pneumatic valve Body material: Forged brass cast brass (for orifice Φ 32, 40, 50only)4: Ambient Temp. 0 -1205: Flow as the arrow, mounts in...