There is also the padding double-PTFE bellows seal. Resistant to corrosion, good sealing performance, a small amount of leakage characteristics. Widely used in chemical, petroleum, metallurgy, medicine, electricity and other sectors of the acid, alkali and other strong corrosive and toxic, volatile and other gases, liquids process control. This series of Nominal grade products are PN10, PN16, the scope of the body bore DN15-150, for fluid temperature ≤ 200 ℃, the amount of leakage or grade Ⅳ Ⅵ grade level, flow characteristics such as linear or percentage.
