Project Description

Flashback Arrestor 85-30

WITT Flashback Arrestors for reliable protection against the dangerous reverse gas flow and
flashbacks according to DIN EN ISO 5175-1.

  • Safety elements: flame arrestor [FA], temperature-sensitive cut-off valve [TV], non-return valve [NV], filter on gas inlet
  • Every arrestor 100% tested
  • BAM certified
  • 84 X 162/188 mm, 4.580 g
  • Acetylene max. 70 m³/h (free flow-off)
  • Fuel gases max. 675 m³/h (free flow-off)
  • Oxygen max. 860 m³/h (free flow-off)

This model is also available in Stainless Steel

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
  • 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 non-return 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 and PED 2014/68/EC Module H
  • CE-marked in accordance with PED 2014/68/EC
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