Munich series bobbin-wound sand filters are built with fiberglass-fortified tanks and a UV-resistant surface finish, fitted with a pressure gauge, manual water and air purges, collector arms and a UPVC diffuser. Working pressure 2.5 bar with a 4 bar test pressure. The series runs from Ø650 to Ø1200. The Ø400-Ø700 side-mounted models use a 7-nut butterfly valve on a glass top cover, Ø800-Ø900 use an ABS and polycarbonate cover with side screw closure, and Ø1000-Ø1200 use a top cover with centre clamp closure.