Flashback Arrestors / Gas Safety Devices - WITT-Gasetechnik - #1

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st 9 I9 subject to change safety devices WITT-Gasetechnik GmbH & Co KG www.wittgas.com manufactures mixing, metering and control equipment as well as analysing systems and safety equipment for all common gases WITT Flashback Arrestors for reliable protection against dangerous reverse gas flow and flashbacks according to EN 730 / ISO 5175-1. Every Arrestor 100% tested. The best Flashback Arrestors in the world �œ�œ a large surface area flame arrestor FA of stainless steel construction extinguishes any dangerous flashback entering the device in any direction �œ�œ a temperature sensitive cut-off valve TV extinguishes sustained flashbacks long before the internal temperature of the arrestors reaches a dangerous level �œ�œ a spring loaded non-return valve NV prevents slow or sudden reverse gas flow forming explosive mixtures in the gas supply �œ�œ a filter at the gas inlet protects the arrestor against dirt contamination, extending the service life (only 85-10 and 85-30) Operation / Usage �œ�œ Flashback Arrestors are used to protect gas cylinders and pipeline outlet points (hoses and any equipment) against dangerous reverse gas flow and flashbacks �œ�œ for pipeline outlets and single cylinders with high users for example supply units for gas cutting machines: Models 85-10 and 85-30 �œ�œ for torches of burners with high flow: Model 85-10NU �œ�œ for cutting machines with high flow: Model 85-10U �œ�œ WITT Flashback Arrestors may be mounted in any position /orientation �œ�œ only one piece of equipment may be connected to a single Flashback Arrestor �œ�œ the maximum ambient / working temperature is 70 °C / 158 °F Maintenance �œ�œ annual testing of the non-return valve, body leak tightness and flow capacity is recommended �œ�œWITT is happy to supply special test equipment �œ�œ Flashback Arrestors are only to be serviced by the manufacturer. The dirt filter may be replaced by competent staff Approvals Company certified according to ISO 9001:2000 and ISO 14001 CE-marked according to: - PED 97/23/EC Certified and under surveillance Safety devices Model 85-10 85-10NU 85-10U 85-30 Flame arrestor FA X X X X Non-return valve NV X X X X Temperature sensitive cut-off valve TV X X - X Weight [g] 434 434 434 4580 Approval DVGW NG-4390BL0421 - - NG-4390AL0031 Approval BAM BAM/ZBA/003/04 Material Housing - Brass; Flame arrestor - Stainless steel; Seal - Elastomer approx. 162 mm (6.38 inch) Ø 84 mm (3.30 inch) appprox. 106 mm (4.17 inch) Ø 34 mm (1.34 inch) approx. 106 mm (4.17 inch) Ø 34 mm (1.34 inch) Technical Data Product Information 85-10 85-10U/NU 85-30 85-30 approx. 188 mm (7.40 inch) Ø 84 mm (3.30 inch) „² „² „² „²