Pneumatic tefulong butterfly valves use disc with ball sealing surface cylinder packed by PTFE, having convenient operation, rigorous sealing performance and long service life. The butterfly valves can be used for rapidly cutting off or regulating flow. Pneumatic tefulong butterfly valves are suitable for the situations which need reliable sealing and good regulating performance.
Pneumatic tefulong butterfly valves consist of pneumatic actuator and butterfly valves. The butterfly valves use a round disc as closure member which can rotate with valve plier. Pneumatic valves are mainly used as block valves. Pneumatic tefulong butterfly valves can also be designed as having regulation performance. Currently, the valves are commonly used in low pressure large and medium caliber pipe lines.
Pneumatic tefulong butterfly valves can be classified into stainless steel pneumatic butterfly valves, hard seal pneumatic butterfly valves, soft seal pneumatic butterfly valves, carbon steel pneumatic butterfly valves, etc.
Usage of pneumatic tefulong butterfly valves
Body uses fission. Sealing on two ends of valve shaft is controlled by rotating base between disc and seat and fluororubber, which ensures that valve shafts cannot contact with fluid media inside antrum. Pneumatic tefulong butterfly valves are widely used in various kinds of industrial pipelines transmitting fluid and gas (including steam). The valves also used for transmitting corrosive media such as sulfuric acid, hydrofluoric acid, phosphoric acid, chlorine, strong base, chloroazotic acid and other media having strong corrosion.
Features of pneumatic tefulong butterfly valves
1. Novel design, reasonable and unique design, light weight;
2. Low torque, convenient for operation;
3. The valves can be installed at any positions, convenient for maintenance;
4. Sealing components can be changed. Sealing performance realizes two-way sealing and zero leakage;
5. Sealing materials have ageing resistance, corrosion resistance and long service life.
