The CBS rupture disc protects intermodal tank containers with especially high demands regarding the leak-tightness and the temperature and corrosion resistance required for the pressure relief device (rupture disc). It is often additionally used below safety valves (e.g. Fort Vale valve) to protect them from corrosion caused by the product and to ensure leak tightness of the safety valve.
The rupture disc has an operating pressure ratio of up to 80 % of the minimum burst pressure (depending on the specific application). CBS can be installed directly between flanges and opens in a star-shaped fashion with no fragmentation. It is perfectly suitable for overpressure as well as vacuum applications and can be used for liquid or gaseous media.
The CBS design ensures the highest degree of leak-tightness and is fitted with a protective ring located beneath the discharge-side gasket. An additional liner can be inserted above the inlet-side gasket if necessary to further improve the disc against corrosion.