Flat composite metallic discs |
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Application • Liquids gas and vapours • Operating ratio: 80% of the bursting pressure at 20°C • Lowest burst pressure can be realized (+25 mbar eff.) • Very good tightness Construction: in accordance with directive 97/23/CE • Between 2 laser-cut metal foils lies a PTFE sealing membrane • Non fragmenting disc. DN15 to DN1200 • Vacuum résistant • -80°C to +150 °C because of PTFE sealing • Bursting tolerances: +/- 5% and +/- 10% Materials • Stainless steel 316 / Nickel / Hastelloy ® / Inconel Alternatives • Bi-directional: bursting either in pressure or vacuum • PTFE lined on process side |
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A) Mounting directly between flanges without holder: • Flanges PN10/16/20/40 • Tightness with PTFE or graphite gaskets |
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B) Signal detector • Requires to use a holder • Inductive detector ATEX mounted in the upper holder • Detection plate welded on the disc, fixed in front of the detector Questionnaire for sizing Complete assembly : disc + detector + holder |
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Reverse metallic discs type U with holder |
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Application
• For liquids (with gas cushion), gas and vapours . • Operating ratio: 85% of the bursting pressure at 20°C . • DN20 to DN250 Recommended for: • Alternating loads • Alternative or high operating pressures • Alternative or high operating temperatures (-80°C / +450°C) • Ideal for application with safety valve Construction: in accordance with directive 97/23/CE • Reverse buckling discs are scored full metal discs. • When reaching the burst pressure the disc buckles and opens at a prescored fracture line. • Non fragmenting disc • Full vacuum resistant • Very good tightness • Without knife-blades Materials • Stainless steel 316 / Nickel / Hastelloy ® / Inconel |
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A) Mounting in a holder between flanges • Flanges PN10/16/20/40/50 • Tightness with PTFE or graphite gaskets |
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B) Signal detector • Inductive detector ATEX mounted in the upper holder • Detection plate welded on the disc, fixed in front of the detector Questionnaire for sizing |
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Discs for sterile installations for clamp ferrules |
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Application • Liquids gas and vapours • Ideal for application with clean service safety valve • Operating ratio: 80% of the bursting pressure at 20°C Construction: in accordance with directive 97/23/CE • Between 2 laser-cut metal foils lies a PTFE sealing membrane • Flat, slotted, non fragmenting • DN15 to DN50 • Vacuum resistant -80°C to +150 °C because of PTFE sealing • Bursting tolerances: +/- 5 and +/- 10% • EPDM (FDA) or PTFE gaskets Alternatives • Bi-directional • Reverse buckling discs: full metal discs. • Seamless surface design for sterile applications Ra< 0,8µm • PTFE lining on process side A) Mounting directly between clamp ferrules • Clamps according to ISO / DIN 32676 / Inches Questionnaire for sizing |
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B) Signal detector • Inductive detector mounted in a longer upper clamp • Detection plate welded on the disc, fixed in front of the detector Questionnaire for sizing |
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High purity gas bursting discs |
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Application • Semiconductor production • Process gases Construction: in accordance with directive 97/23/CE • ¼" ½" ¾ "1 " • Bursting pressure from 2barg up to 400 barg • Minimum leakage rates of 10-9mbar*l/sec can be achieved • Separate idenditification plate Materials • Stainless steel 316 / Nickel / Hastelloy ® / Inconel Mounting • VCR-coupling • 3 pces coupling • In existing coupling Questionnaire for sizing |
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High pressure bursting discs |
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Application
• Pumps and high equipments Construction: in accordance with directive 97/23/CE • Sealing is obtained by a conical thrust piece in the conical seating of a high-pressure screw coupling of the Dunze/Nova/Sitec style. • size: ¼" • Bursting pressure from 400 barg to 5000 barg • Separate idenditification plate Materials • Stainless steel 316 / Nickel Questionnaire for sizing |
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Bursting plugs |
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Application • Extruders, tanks: to avoid dead space. • Construction: in accordance with directive 97/23/CE • Screw-in plugs with a soldered-on or welded-on bursting foil Materials • Stainless steel disc 316 / Nickel / Hastelloy ® • Brass or stainless steel plug Questionnaire for sizing |
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GRAPHITE DISCSSeries F with PFA coating |
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Application
• Vacuum operation (with separate, reusable perforated disc made from graphite or PTFE) • Food applications, no risk to health (PFA coating applied conforms to EC directive and FDA regulations) • Bursting behaviour unaffected by temperature Construction • Monoblock construction for direct mounting between DIN / ISO or ANSI standard flanges. • Non-resin-impregnated process equipment graphite with PFA coating. • Fragmenting disc Field of use : • Bursting pressure: 0,2 to 35 barg • Maxi service pressure in % of nominal bursting pressure: - Static load : 80% - Oscillating load : 75% Download PDF Questionnaire for sizing |
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Series N for universal use |
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Application
• Standard applications with partial vacuum Construction • Monoblock construction for direct mounting between DIN / ISO or ANSI standard flanges. • Synthetic resin-impregnated process equipment graphite • Fragmenting disc Field of use : • Bursting pressure : - Series NI : 0,1 to 50 barg - Series NII: up to 80 barg • Maxi service pressure in % of nominal bursting pressure: - Static load : 75% - Oscillating load : 70% • No change in bursting pressures from -60 to +50°C, thereafter about 5% reduction per 40°C rise in temperature Questionnaire for sizing |
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Series HT Thermal stability up to 300°C |
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Application
• Bursting behaviour unaffected by temperature • Vacuum operation (with separate, reusable perforated disc made from graphite or PTFE) • Food applications, no risk to health Construction • Monoblock construction for direct mounting between DIN / ISO or ANSI standard flanges. • Non-resin-impregnated process equipment graphite with graphite foil or PTFE film (not vacuum resistant) • Fragmenting disc Field of use : • Bursting pressure : - Series HI : 0,1 to 35 barg - Series HII: up to 80 barg • Temperatures range : -60°C to +300°C with graphite foil -60°C to +250°C with PTFE foil • Maxi service pressure in % of nominal bursting pressure : - Static load : 80% - Oscillating load : 75% Questionnaire for sizing |
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Alarm systems |
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Description
The alarm systems used for monitoring graphite safety discs provide a visual and acoustic alarm or trigger plant cutoffs. Two tantalum contacts or a contact finger in the alarm system press against the membrane of the safety disc and close the circuit of an amplifier relay. When the safety disc ruptures, the current circuit is interrupted and this triggers the alarm. Advantages • Corrosion resistance ensured by use of suitable materials. • Reusability after safety disk rupture • Simple electrical connection via the 1.5 meter-long integral connecting cable • Used together with the matching amplifier relay, this system can also be operated in high explosion risk zones. Technical data • Service voltage : AC 207V-253V, 45Hz - 60Hz, DC20 V - 30V Control circuit • [EExia] II C, input as per DIN 19234 (NAMUR) • Output: 1 changeover AC 253 V / 2 A, DC 40 V / 2 A • The amplifier relay should be mounted outside the explosion risk zone |
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EXPLOSION PANELS |
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Application
• Filters, silos, storage powders • Explosion Vents are specially designed for relief of dust explosions. • Explosion Vents combine safety and shorter opening times Construction • Domed: resistant to alternative loads: pressure / vacuum • Flat: suitable for plant equipment with static over or under pressure conditions up to 50% of the rated rupture pressure. • Round or rectangular Materials • 304L or 316L stainless steel • EPDM gaskets (maxi +120°C) & white silicon gaskets (maxi +200°C) Options • Insulation discharge side by fireproof mineral wool according to DIN 1259. • The insulation is directly mounted to the "vent- side" of the explosion vent and is protected by a light-weight aluminium cover with a water-tight seal. • Bursting sensor: The sensor signals the opening of the explosion panel so that equipment such as fans or rotary valves can be switched off. Norms • VDI 3673 / NFPA 68 / CEN TC 305 • Marking CE / ATEX 100 / EN14491 • Quality Insurance ISO 9001 • Test certificates according to EN 10204 3.1B |
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INDOOR EXPLOSION VENTING |
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Application
• Indoor vents are applied for flameless venting • By using Explosion Vents in combination with a unique Ceramic Filter, economical venting of dust explosions is possible. • When the vent opens during an explosion, the ceramic filter retains the dust and cools down the hot gases. • The IndoorVent can be re-used after changing the filter cartridges and the explosion vent. Parameters • Extendable from 1900 cm² to 3100 cm² • Tested up to P red max 0,9 bar • The Indoor Vent can be used for reducing explosion pressures (P red) between 0.2 to 1.5 bar g and K st values up to 250 bar m/sec. Norm • certified according to the ATEX 100 standard |
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