Ceramic materials offer higher chemical resistance to most acids and alkali than stainless steel, titanium, Monel and other alloys, with hardness properties equaled only by diamond. GRV SF15F/SF30F ball valves have incomparable advantages against corrosion and attrition from to any media (but hydrofluoric acid) involved in petroleum, chemical, mining and metallurgy, pulp and paper, paint, pharmaceutical and textile industries, with maximum operating temperature 500°C.