Citroen pneumatic knife-shaped gate dark rod pneumatic knife gate valve is the more complex automation and control instrument, by a variety of pneumatic components and body composition. Requirements used for fast cutting or opening of the occasion. ◎ dual role: on the valve opening and closing of two control; ◎ Single: (spring): In the road cut off gas or electrical failure, the valves automatically open or close. 
 Optional Annex 1, single-or dual-control solenoid valve (with 24V, 220V and other voltages are available, when necessary, optional explosion-proof solenoid valves). 2, close to the switch 3, triple gas source processing parts (including valve, filter, lubricator). 4, electric / gas valve positioner (adjustable type with). 
 http://www.telonvalve.net/p190.htm 
 Series: Knife gate valve http://www.telonvalve.net/daozhafa.htm 
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