thread (NPT, G or customer-specific thread, connection systems (e.g. These holders are then fitted with the necessary connections, e.g. In some cases the rupture disc is already soldered or welded into the holder by the manufacturer. Rupture discs are either installed directly between flanges, or inserted into a corresponding rupture disc holder, which is then mounted between flanges. The materials used range from various stainless steels to higher quality materials such as Inconel, Hastelloy, or Tantalum, and all the way up to coatings or plastic liners such as PTFE or FEP.
Within these different varieties, there is a broad range of possible combinations.įor example, plastic film is sandwiched between metal layers for triple section rupture discs, in order to reach even the lowest burst pressures.
Domed rupture discs either have the dome towards the process (reverse acting rupture disc), or away from the process (forward acting rupture discs). They are made of metals or plastics, from one or more layers, and they can be domed or flat. This part of the rupture discs is known as the rupture element.ĭifferent applications require different types of rupture discs.
These can be simple cuts or even special geometries. Many rupture discs are equipped with breaking points which are created for example, by means of lasers. Rupture discs for pressure relief are round or square, consist of one or more layers, and are either flat or domed.
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