Butterfly valve uses disc that runs with stem as open-close part in order to realize open, close and adjustment of valve. Butterfly valve with
lining use rather thick macromolecule material on flowing parts such as body, disc and stem, with perfect anti-corrosive capability, suitable for
mediums of acid, alkali, salt and oxidant, reducer, organic solvent etc. in any concentration. It is ideal product for gas, liquid, viscid pipeline and
container as stop and adjust equipment which use in systems of chemical, petroleum, pharmacy, foodstuff, steel metallurgy, paper making, water
power etc. furthermore, it can replace gate, globe valve and other type of stop, regular valve.