FLANGED GAT VALVE AVK DN300 PN10 ENAMELLED

Every detail of AVK's flap valves is designed with safety in mind. The seat is fully vulcanized using AVK's own EPDM rubber compound, approved for drinking water. INTERNAL ENAMELING: Internal enameling is an optional internal epoxy coating when additional protection against chemicals is required. The enamel is a ceramic coating with a completely smooth surface, offering durability and chemical resistance equivalent to glass, making it suitable for almost all liquids. The ceramic coating is melted and fired at high temperature, creating a chemical fusion between the base metal and the enamel. The smooth surface prevents the adhesion of impurities and microorganisms, and corrosion cannot propagate from minor damage. Coating process: • Preheating and gas removal at 800 °C for 5–8 minutes • Sandblasting according to DIN 55928, part 4, SA 2.5 • First coat application, minimum 100 µm • Firing at 790 °C for 40 minutes • Second coat application, minimum 100 µm • Firing at 770 °C for 40 minutes • External sandblasting and epoxy coating • Mechanical, physical, and chemical inspection according to DIN 3475 Coating thickness according to DIN 3475: Minimum 250 µm Average maximum 400 µm Locally maximum 1000 µm Approvals: The coating is approved for drinking water use and meets all toxicological requirements. This product description is an automated translation of the original Finnish description.