Pneumatic flapper valve movement. Model specifications DN400 form 100 according to shape into flapper valve port side, round mouth flapper valve, side port side and one side round mouth flapper valve flapper valve by type into manual, electric and pneumatic flapper valve flapper valve . flapper valve common parameters can be divided into several inner diameter of 200, 300, etc. For details call us Su Jing, Price 15128740750. cast stainless other materials can be customized pneumatic flapper valve characteristics: simple structure, flexible operation, light weight, no card group, is particularly applicable to all types of solid materials, 50mm or so, transport and material flow slug adjustment, installation angle without restrictions, easy to operate to work, ready to adjust the opening and so on. Product features see-through pneumatic flapper valve is a gate valve is always in close contact with the sealing of the valve, the principle is open to have a diameter the size of the circular opening the gate, through the gate opening and closing the shutter makes round mouth with Path do completely out and consistent action. Suitable medium for mining coal preparation plant, slag, food, paper and chemical piping ,,, connect or disconnect the line of grout, gold powder, ore, slag, coal, pulp, wood pulp, tailings, fibers, dust, chemicals, sewage treatment, sedimentation tanks, asphalt, silos and other media outlet. Supply DN400 * 400 pneumatic flapper valve to provide cash 15,128,740,750 electric three sub-feeder wear durability, usually at an angle of 45 degrees to the standard model. Drive: electric, electro-hydraulic, pneumatic. Workshop can be customized. Standard model shipped the same day, special sizes 2-3 days duration, welcome to our factory at any time contact the sales department Su Jing offer. Thank you happy.