The electric butterfly valve is a kind of expandable and contractible internal mold with different shapes, which is made by vulcanizing with the fiber reinforced layer. It has high compressive strength, elasticity and air tightness, and is vulcanized with high-strength fiber cloth. All adopt natural and synthetic processes to ensure stable quality. Through many engineering construction practices, it has been proved that the hole drawing process equipment is simple, which not only saves materials, but also has the characteristics of variable shapes, which can form circular, elliptical, rectangular, arch, octagonal, trapezoidal and other apertures. It can also be formed into straight holes, variable cross-section holes, etc., which can make the building structure become light and thin-walled hollow beams and slabs.
The electric butterfly valve shall be well maintained during use and non use:
1. Store away from heat sources.
2. If it is not used for a long time, it should be washed and dried, filled with talcum powder inside and coated with talcum powder outside, and placed indoors in a dry, cool and ventilated place.
3. Do not contact with acid, alkali, grease and organic solvent.
4. It shall be stretched out and placed flat, and shall not be stacked or piled with weights.