Product g^B): 171 Product number: 708537 No. 1 Choice for Flame Arrestors (Flashback Arrestors) certified and under surveillance by The Federal Institute for Materials Research and Testing (German: Bundesanstalt fur Materialforschung und -prufung, or BAM) and OCIMF/RIGHTSHIP compliant. Protect regulators and gas cylinder against flashback. Product information This product supersedes product no: 619254 Maritime authorities, such as the Norwegian Maritime Directorate, require the installation of flashback arrestors for acetylene and oxygen, as incorrect maintenance or use of gas welding equipment may cause flashbacks of various types. Normally these will stop in a well-designed torch and are only noticed as a popping sound in the torch. However, faulty handling, maintenance or gas pressure setting may lead to a penetrating flashback. This means that the gas flame passes back through the hose(s). In some cases, it may also pass the regulator and ultimately reach the cylinder. The S-55 model flashback arrestors are designed for use both with gas cylinders and gas outlet stations. The flashback arrestors are built, conforming to: EN 730/ISO 5175 and with BAM Certification no.: ZBF/009/12. **Safety** For safety reasons in line with COSWP UK (BCGA CP7), OCIMF SIRE and RIGHTSHIP RISQ requirements, we strongly recommend annual testing of the flashback arrestors, and to replace flashback arrestors every 5 years. Features • Pressure sensitive cut-off valve to prevent further gas supply after a flashback (activated by the pressure shock in front of the flashback). • Temperature activated cut-off valve to prevent further gas supply in case of fire (activated if the temperature rises to approximately 100° C). • Flame filter/arrestor to quench the flame front of a flashback or a burn back. • Non-return valve for preventing reverse flow of gases, thereby preventing a gas mixture from reaching pipelines or cylinders. • Resettable. • Each flashback arrestor 100% tested. • Marking of manufacturing date and serial number for traceability. Benefits • Stops the pressure front and flame front. • Stops gas from back feeding into the system. • Prevents fire from being supported by gas. • Indicator ring will show if the pressure activated cut-off has been activated; the ring is also used for resetting the flashback arrestor. Invent Hazard Material (IMO/EU) classification NA Technical data Performance data Operating pressure [bar] 1.5 maximum Capacity 8,5 m3/h Variants Product name FLASHBACK ARRESTOR FR-20 FOR AC+OX FLASHBACK ARRESTOR S55 AC FLASHBACK ARRESTOR S55 OX FLASHBACK ARRESTOR W-66S ACETYLENE FLASHBACK ARRESTOR W-66S OXYGEN Diameter [mm] Length [mm] Capacity Operating pressure [bar] 27.5 119 8,5 m3/h 1.5

Is accessory to 526472 2X6.3MM % INCH AC/OX TWINHOSE W/FITTING 10MTR 526478 2X9MM 3/8 INCH AC/OX TWINHOSE W/FITTING 10MTR 734013 QUICK COUPL. AC HOSE TO HOSE 3/8INCH 526482 2X9MM 3/8 INCH AC/OX TWINHOSE W/FITTING 25MTR 734016 QUICK COUPL. AC REGULATOR TO HOSE 3/8INCH 734025 QUICK COUPLING AC MALE G3/8LH 320205 QUICK COUPLING AC HOSE TO HOSE 6MM Is spare to 778199 OUTLET STATION 700 COMPL. R530 S55 AND CABINET 5502771 OUTLET STATION-700 COMPL. W/SG-5 AND CABINET Is part of bundle 526509 STANDARD GAS ACCESSORIES Is frequently bought together with 905034 OXYGEN O-40 FILLING 510001 REGULATOR 510...