the characteristics of the butterfly valve ( 1) Butterfly valve adopts lever type opening and closing structure, make the relative sliding between the butterfly valve sealing pair is very small, reduce the relative wear. ( 2) Butterfly valve actuator using connecting rod strengthening institutions. The institutions in the butterfly valve in the closed state, can drive the output torque, and has the self-locking performance, safe and reliable work. ( 3) Using metal plane sealing structure, butterfly valve has a strong corrosion resistance and wear resistance, suitable for high temperature environment, long service life. ( 4) Butterfly valve key parts were optimized, make the total number of valve opening and closing can reach 1 & times; More than 106 times. ( 5) Butterfly valve control system USES non-contact reed switch, without being limited by the environmental conditions, and sensitive signal butterfly valve accuracy is high, can realize remote control, pneumatic control and automatic control, and form a complete set of equipment can realize unmanned operation. Failure and eliminating measures: 1 filler leakage 2 packing gland is too loose, can be evenly to the packing gland nut and tighten. 3 packing ring number is not enough, should increase the packing. 4 packing due to improper use too long or save failure, a new packing should be replaced. 5 leakage between the Industrial Valves body and disc sealing face 6 sandwiched between sealing surface dirt, can wash to eliminate it. And sealing surface damage should be to welding processing. 8 soft sealing ring is damaged, to replace the new ring. 9 stem rotation is not flexible 10 packing pressure tight, should be appropriate unscrew packing gland nut. 11 gland malposition, stem and should be uniform budge on the packing gland nut, gland returned to its normal position. 12 the valve stem and valve stem has killed, bearing damage, shall be open to eliminate.

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