Flexible disc valve ,butterfly valve using for maintain

An overview of the The valve is used for petroleum, chemical, food, medicine, textile, papermaking, electric power, water supply and drainage, for adjusting flux path of the pipeline and by the media, has the function of compensating pipe heat bilges cold shrink. 1, design reasonable, unique structure, light quality, easy to operate, rapid opening and closing. 2, the telescopic butterfly valve can adjust flow and by the media, and can compensate pipe temperature difference of