Flashback Arrestor 270N/NU

Flashback arrestor, certified to DIN EN ISO 5175-1, for very high flow rates

  • highest quality from the world market leader
  • safety elements: flame arrestor [FA], non-return valve [NV], temperature-sensitive cut-off valve [TV]
  • every arrestor 100% tested
  • 62 X 131-160 mm, 1.400-1.700 g
  • fuel gases (other than acetylene) max. 371 m³/h (free flow-off)
  • air max. 164 m³/h (free flow-off)

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Information

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.

The best Flashback Arrestors in the world

  • 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 non-return valve NV prevents slow or sudden reverse gas flow forming explosive mixtures in the gas supply

Operation / Usage:

  • Flashback Arrestors are used to protect gas cylinders and pipeline outlet points (hoses and any equipment)
  • also in thermal processing systems against dangerous reverse gas flow and flashbacks
  • WITT Flashback Arrestors may be mounted in any position /orientation
  • the maximum ambient / working temperature is 70 °C / 158 °F

Maintenance:

  • 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

Approvals
Company certified to ISO 9001 and PED 2014/68/EU Module H
CE-marked  in accordance with to PED 2014/68/EC

Accessories

Pipeline Fittings

Pipeline Fittings

For flashback arrestors models 270N/NU and 623N/NU, as well as non-return valve model 70

Test Rig 722

Test Rig 722

For the annual testing of WITT flashback arrestors and non-return valves