Flashback Arrestor RF85-30N/H-ES

Stainless steel flashback arrestor, certified to EN 730-1 / ISO 5175, UL listed, standard for maximum flows and higher pressures

  • highest quality from the world market leader
  • safety elements: flame arrestor [FA], temperature-sensitive cut-off valve [TV], check valve [NV], filter on gas inlet
  • every arrestor 100% tested
  • UL listed
  • also ideal for use with corrosive gases
  • 3.31 X 6.1 inches, 157 oz
  • acetylene max. 2,471 scfh (free flow-off)
  • fuel gases max. 23,826 scfh (free flow-off)
  • oxygen max. 30,357 scfh (free flow-off)

Product of WITT 

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WITT Flashback Arrestors for reliable protection against dangerous reverse gas flow and flashbacks according to EN 730-1 / ISO 5175. Every Arrestor 100% tested.


  • a large surface area flame arrestor FA of stainless steel construction extinguishes any dangerous flashback entering the device in any direction
  • a temperature-sensitive cut-off valve TV extinguishes sustained flashbacks long before the internal temperature of the arrestors reaches a dangerous level
  • a spring-loaded check valve NV prevents slow or sudden reverse gas flow forming explosive mixtures in the gas supply
  • a filter at the gas inlet protects the arrestor against dirt contamination, extending the service life

Operation / Usage:

  • Flashback Arrestors are used to protect gas cylinders and pipeline outlet points (hoses and any equipment) against dangerous reverse gas flow and flashbacks
  • ideal for use with corrosive gases in the chemical industry, process technology or in the laboratory area
  • for pipeline outlets and single cylinders with high users for example supply units for gas cutting machines
  • WITT Flashback Arrestors may be mounted in any position/orientation
  • only one piece of equipment may be connected to a single Flashback Arrestor
  • the maximum ambient/working temperature is 70 °C / 158 °F


  • annual testing of the check valve, body leak tightness and flow capacity is recommended
  • WITT is happy to supply special test equipment
  • Flashback Arrestors are only to be serviced by the manufacturer. The dirt filter may be replaced by competent staff

Company certified according to ISO 9001
CE-marked according to PED 97/23/EC



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