pneumatic valve 1.ISO9001:2000 certification 2.Sino-Korean joint venture 3. OEM service 4. Exclusive agency service -Bv400 Series Pneumatic Valve - Ordering Code- - Series Code----- Coil And Places------------------------- Standard Voltage - 1:100 Series---- 10:Single-Head Double-Position--- DC12V - 2:200 Series---- 20:Double-Head Double-Position-- DC24V - 3:300 Series---- 30C:Double-Head Three-Position-- AC24V --------------------------------Close Type-----------------------