Flashback Arrestor RF85-30N-ES

Stainless steel flashback arrestor, certified to DIN EN ISO 5175-1, standard for maximum flows

  • 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
  • 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)

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    WITT Flashback Arrestors for reliable protection against dangerous reverse gas flow and flashbacks  in accordance with DIN EN ISO 5175-1. 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 laboritories
    • 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 60 °C / 140 °F
    • gases: natural gas, LPG, hydrogen (more upon request)


    • 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 to ISO 9001
    CE-marked in accordance with PED 97/23/EC

    Note: The models RF85-20N and RF85-30N are suitable for fuel gas and oxygen.


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