Safety Group 645/85-30 stainless steel

Data sheet Quotation request

Parallel connection of 4 stainless steel flashback arrestors 85-30 according to DIN EN ISO 5175-1 for high flow rates

highest quality from the world market leader
safety elements: flame arrestor [FA], temperature-sensitive cut-off valve [TV], non-return valve [NV]
every arrestor 100% tested
also ideal for use with corrosive gases
285 X 430 mm, 44 kg (2-fold), 53 kg (4-fold)
acetylene max. 392 m³/h (free flow-off)
fuel gases max. 2.740 m³/h (free flow-off)
oxygen max. 1.850 m³/h (free flow-off)

Information

WITT Safety groups for reliable protection against dangerous reverse gas flow and flashbacks in accordance with DIN EN ISO 5175-1. 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 non-return 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 non-return valve, body leak tightness and flow capacity is recommended
safety groups are only to be serviced by the manufacturer

Options

connection: two-sided female thread (G-; NPT-; RC-thread)

Approvals
Company certified to ISO 9001 and PED 97/23/EC Module H
CE-marked in accordance with PED 97/23/EC