Profile: Donadon SDD Srl is a manufacturer of safety devices. We are an ISO 9001:2008 certified company. We offer rupture discs and venting panels. We provide a range of safety devices for protection of equipments from pressure variations. Rupture discs are available in stainless steel, nickel, titanium, special alloys and graphite. Venting panels are used for the protection of plants with explosion risk. Rupture indicators is used in explosive atmosphere applications. We also supply a wide range of pressure relief valves. Our SCD micro-scored rupture disc is a concave rupture with micro-scored calibrated section. Special feature of SCD is scoring in 6 sectors instead of 4 as usual in all discs. Opening in 6 petals allows a better opening reducing the risk of petal detachment even at high bursting pressure. Conventional discs have a flat or concave surface exposed to the pressure. Bursting happens when the pressure (or depression) overcomes the mechanical resistance of the material, after having gradually increased the camber of the disc.