Cutting and welding flashback arrestor 645/623N

for the glass industryfor pressure regulatorsfor hydrogen

Parallel connection of 4 or 5 Flashback Arrestors model 623N WITT Safety groups for reliable protection against dangerous reverse gas flow and flashbacks according to EN 730-1 / ISO 5175. For applications with high flow rates. Every safety group 100% tested. Benefits: 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 Operation / Usage: in central gas supplies (behind the manifold pressure regulator or in a pipeline system) in thermal processing systems conforming to EN 746-2 (cutting machines, furnace supply equipment) WITT safety groups may be mounted in any position/ orientation in pipelines / supply pipes the maximum ambient / working temperature is 70 °C / 158 °F Maintenance: annual testing of the check valve, body leak tightness and flow capacity is recommended safety groups are only to be serviced by the manufacturer