Professional Industrial Valves Manufacturer

Electric butterfly valve in use there may be a problem

by:Mech     2020-10-21

electric butterfly valve as one of the more common products in the electric control valve, in the customer communication with our after-sales service, will find some possible glitches. Company small make up today to sort out about electric butterfly valve in the actual operation process of the small problem.

first introduced under multi-level hard seal butterfly valve, metal hard seal butterfly valve sealing ring is fixed on the valve plate, when the valve plate normally open state media on the sealing surface to form positive scour, soft sealing strip of metal sandwich after flushing, directly affect the sealing performance. This is a material leakage or other media. ( It is also more common failure) The second is the calibre of the valve by valve plate overall structure is too thick, large flow resistance. Not suitable for DN200 caliber of butterfly valve. And because of the principle of three eccentric structure, between the sealing surface of valve plate and valve seat sealing is to rely on transmission torque valve plate pressure to the valve seat. Is flow state, the higher the medium pressure seal compression tight. When the countercurrent flow medium with the increase of medium pressure valve plate and Industrial Valves seat unit is less than the pressure medium, the positive pressure between seal began to leak. And now, my company adopted in in order to solve practical problems customers close by soft t-shaped sealing ring on both sides of the sealing ring composed of multi-layer stainless steel sheet. plate and valve seat sealing surface for the oblique cone structure, the valve plate oblique cone surface welding heat resistance, corrosion resistant alloy material; Fixed between the adjusting ring clamp spring together with the clamp on adjusting bolt assembly structure. This structure can effectively compensate the tolerance zone between sleeve and body and the elastic deformation of the stem under medium pressure, solve the valves in the process of the two-way exchange medium conveying the sealing problems. Valves, valve experts around you!


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