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FLASHBACK ARRESTOR W-66S OXYGEN

_Product Code

Product group:
171
Product number:
302976

Protect regulators and gas cylinder against flashback and detonation

Product information

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 settings 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 flashback arrestors supplied by Unitor are designed for use both with gas cylinders and gas outlet stations and incorporate several safety functions:

  • Non-return valve preventing reverse flow of gases, thereby preventing a gas mixture from reaching pipelines or cylinders
  • Flame filter to quench the flame front of a flashback or a burnback
  • Temperature activated cut-off to prevent further gas supply in case of fire (activated if the temperature rises to approximately 100° C)
  • Pressure activated cut-off to prevent further gas supply after a flashback (activated by the pressure shock in front of the flashback)
  • Pressure relief valve to vent off excessive pressure in case of flashback or wrongly set working pressure (on W-66S only)
  • The flashback arrestors are build Conform to: EN 730/ISO 5175 and with BAM Certification no.: ZBF/009/12

Safety

For safety reasons we strongly recommend annual testing of the Flash back arrestors, and to change flashback arrestors every 5 years, calculated from the date you start using the equipment.

Features

  • Pressure activated cut-off valve
  • Temperature activated cut-off valve
  • Flame arrestor
  • Non-return valve

Benefits

  • Stops the pressure front
  • Prevents fire from being supported by gas
  • Stops the flame front
  • Stops gas from feeding back into the system

Specification

Technical data

Air pressure [bar] 10 supply

Performance data

Capacity 110

Variants

Product name Product number Capacity Air pressure [bar]
FLASHBACK ARRESTOR W-66S ACETYLENE 183970 19 1,5
FLASHBACK ARRESTOR W-66S OXYGEN 302976 110 10

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