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经国家科委评定为’95国家级重点新产品。该成果采用阀杆与阀瓣连阀杆于一体的结构，并将FEP或PTFE塑层直接压铸在阀体、阀瓣与阀杆过流部位表面，利用金属构件控制塑层的热胀冷缩。在温度-80℃-180℃，压力≤1MPa的硫酸．盐酸、氢氟酸、王水、醋酸、氯气、苯、溴、强碱、强氧
It has been rated as ’95 national key new products by the State Science and Technology Commission. The result adopts the structure that the valve stem and the valve rod are connected in one body, and the FEP or PTFE plastic layer is directly die-casted on the surface of the valve body, the valve flap and the valve stem overflow part, and the metal member is used to control the thermal expansion and contraction of the plastic layer. . In the temperature -80 °C -180 °C, pressure ≤ 1MPa of sulfuric acid. Hydrochloric acid, hydrofluoric acid, aqua regia, acetic acid, chlorine, benzene, bromine, strong base, strong oxygen