Rupture Discs
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Rupture Discs Broad Base. Best Solutions.

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Carbon is Future. SGL Group – The Carbon Company. Process Technology The Business Unit Process Technology is a premium technology provider for chemical and related industry process systems, equipment and after sales services. Our focus are high-tech materials for demanding chemical applications. With smart and sustainable solutions for an increasing number of industry we give proof of our strong innovation culture. Broad Base Carbon has unique properties. It is indispensable in the production of steel, aluminum and solar energy systems. Carbon increases the performance of wind turbines and...

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SUSTAIN ABILITY. Powered by our Broad Base of competencies, products and services, we offer Best Solutions to our customers. For the Business Unit Process Technology, those solutions are characterized by reliability, Best Solutions In a business that strongly depends on reliability we never compromise on quality and safety. Our products deliver dependable results; our services are fast and competent. The long-standing loyalty of our customers proves that we keep our promises - on-time, on-spec, on-budget. Tailor made, innovative solutions and an integrated approach on chemistry, materials,...

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DIABON® Safety Disks Specifications Safety disk range overview Temperature range Bursting tolerance Type of design Bursting pressure range (gauge) Standard designs of DIABON® graphite safety disks Corrosion resistance Our safety disks are made exclusively from DIA- notable for their high resistance to a large number BON graphite, PFA (fluoroplastic), PTFE and SIGRAFLEX® graphite foil. These materials are Dependence on temperature In metal safety disks the bursting pressure generally declines with a rise in operating temperature. In DIABON safety disk series N, peratures above 50°C. The...

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Series F with PFA Coating Design Monoblock construction for direct mounting between DIN or ANSI standard flanges. The non-resin-impregnated disk is sealed against the pressure vessel interior by a sintered-on PFA coating. Materials Non-resin-impregnated process equipment graphite (DIABON 0S1) with PFA coating. Properties Ǡ Bursting behavior unaffected by temperature Suitable for vacuum operation Suitable for food applications, no risk to health The PFA coating applied conforms to German food and drugs legislation and EC directives, as well as to FDA regulations. Series F DIABON® graphite...

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Design Monoblock construction for direct mounting between DIN or ANSI standard flanges. Installation with the recess on the pressure side ensures that the bursting membrane breaks away completely to expose the full pressure release aperture. Material Synthetic resin-impregnated process equipment graphite (DIABON NS1) Properties Ǡ Universally usable safety disk for standard applications Suitable as a safeguard against overpressure and partial vacuum (series N I) Series N DIABON® graphite safety disk with integrated vacuum support Free cross- section with

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Field of use Bursting pressures (gauge) Ǡ Max. service pressure in % of nominal bursting pressure Ǡ Oscillating load 70 % Bursting behavior No change in bursting pressures from – 60 to + 50°C, thereafter about 5 % reduction per 40°C rise in temperature. Series N, HT and F DIABON® graphite monoblock safety disks Series N I Standard flanges* Weight of safety disk *Care should be taken to ensure correct dimensioning of the standard flanges

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Series HT Thermal Stability up to 300°C Design Monoblock construction. The inserted pressure disk ensures that the actual bursting pressure conforms closely to the nominal value, even if this is relatively high. The unimpregnated disk is sealed off from the pressure vessel interior by a SIGRAFLEX graphite foil or, on request, a PTFE film (films are not vacuumresistant). Materials Non-resin-impregnated process equipment graphite (DIABON 0S1) with SIGRFLEX graphite foil or PTFE film. Properties Ǡ The bursting behavior is unaffected by temperature Suitable for food applications, no risk to...

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Max. service pressure in % of nominal bursting pressure Ǡ Vacuum support Separate, reusable perforated disk made from DIABON graphite or PTFE. As a rule, this is essential if there is any risk of an unintended vacuum. At temperatures exceeding 100°C, PTFE vacuum supports should only be used up to 100 mm diameter. DIABON® graphite vacuum support for series HT I and F safety disks Series HT I Standard flanges* Free cross- section with vacuum support *Care should be taken to ensure correct dimensioning of the standard flanges

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Series D for Repeated Reuse Design Three-part design consisting of a bursting membrane and a two-part holder, which is mounted between DIN or ANSI standard flanges. Materials Membrane: Synthetic resin-impregnated process equipment graphite (DIABON NS1) Holder: equipment graphite (DIABON NS1) or stainless steel grade 1.4571. Properties Ǡ Cost advantage, because holder can be reused Suitable for vacuum operation Field of use Bursting pressures (gauge) Ǡ Series D DIABON® graphite safety disk Vacuum support Reusable perforated DIABON graphite disk which can be integrated into the holder....

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Series DV for Ease of Mounting and Reuse Design Three-part design consisting of a bursting membrane made from DIABON graphite reinforced in the mounting area and a two-part holder made from stainless steel grade 1.4571 whose upper section rests on the lower section when assembled. This arrangement prevents distortion of the membrane. Series DV bursting membranes can also be employed in series D DIABON graphite holders. If this is done, however, the prescribed torque values should be observed. Materials Membrane: Synthetic resin-impregnated process equipment graphite (DIABON NS1) Holder:...

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Bursting-Type Safety Devices and Alarm Systems Bursting-type safety devices made from SIGRAFLEX graphite foil for very low bursting pressures Material SIGRAFLEX graphite foil Design SIGRAFLEX graphite foil (bursting membrane) with Permitted service DSL composite gaskets attached by adhesive to Special bursting-type safety de- each side. Can be mounted without additional se- vice for very low bursting pres- curing devices. sures beyond the lower limit at- tainable with DIABON safety The bursting pressures can, if desired, be adjusted disks. The corrosion resistance of Bursting pressures...

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