本产品内腔及球体均采用高压注塑工艺，衬有耐腐蚀、耐老化的F46或PTFE。故具有可靠的 耐腐蚀性和密封性。能广泛用于化工、石油、冶金、医药、电力等工业控制系统。对酸、碱等强 腐蚀性介质均能很好地应用。
The inner cavity and sphere of the product adopt high pressure injection molding process, and is lined with corrosion resistant, aging resistant F46 or PTFE. So it has reliable corrosion resistance and sealing. It can be widely used in the industrial control system such as chemical industry, petroleum, metallurgy, medicine, electrical power, etc. Strong corrosive medium such as acid, alkali can be well applied.