Pneumatic ball valve pneumatic valve classification according to the structure characteristics of what?

according to the structure characteristics of classification:
( ） Door form: the open-close part ( Pneumatic disc) Driven by pneumatic valve rod along the center line of the pneumatic valve seat lifting movement;
　　（ ） Cock form: the open-close part ( Brake pneumatic valve) Driven by pneumatic valve rod along the perpendicular to the center line of the pneumatic valve seat lifting movement;
　　（ ） Cock: pneumatic valve opening and closing ( Cone plug or ball) The center line of rotation around;
　　（ ） Swing pneumatic valve: open/close ( Pneumatic disc) Revolve around seat outside the shaft;
　　（ ） Butterfly: open-close part ( The disc) Around pneumatic seat within the fixed axis rotation;
　　（ ） Slip line pneumatic valve: open/close a slide in the perpendicular to the direction of the channel.