FLANGED GAT VALVE AVK DN40 PN10/16 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.