• Three electrode insert position with positive stop and easy to operate by left hander and right hander
• Dense pressure forged conductivity parts
• Insulated parts withstand 1500 arc resistance. / high impact strength.
• Firm electrode grip reduces heat generation.
• Low profile leverage reduces welder's fatigue and down time for change of electrode.
• High heat resistant non corrosive fully insulated stainless steel spring.

Every BOe Flashback Arrestor is tested individually for body leaks, function of its non-return valve, cutoff valve and relief valve and is subjected to flashback testing at the maximum rated operating pressure in accordance with ISO Standards or those of the country of sale.

MAINTENANACE
No maintenance is required. Nevertheless it is recommended that at annual intervals the units are tested with clean dry air or nitrogen for body leakage and for proper function of the valves. Test specifications and test equipment available on request.

REPAIR
Defective units should only be serviced by the manufacturer or his authorised local representative as full testing including flashback testing after reassembly is required. The change of this dirt filter is not part of this requirement and can easily be carried out.

MAINTENANACE
No maintenance is required. Nevertheless it is recommended that at annual intervals the units are tested with clean dry air or nitrogen for body leakage and for proper function of the valves. Test specifications and test equipment available on request.

REPAIR
Defective units should only be serviced by the manufacturer or his authorised local representative as full testing including flashback testing after reassembly is required. The change of this dirt filter is not part of this requirement and can easily be carried out.

INSTALLATION
The BOe F I Flashback Arrestor maybe installed at regulator or pipeline outlets. For pipelines use a shut-off valve should be fitted immediately upstream of the arrestor. If there is a danger from water vapor being carried with the gas, then a seperator should be installed upstream. The arrestor may be mounted horizontally, vertically or any other position. The maximum working temperature is 70°C.

1. Large surface mesh filter to remove dirt particles from the gas to improve service life of the arrestor.
2. Pressure activated cut-off valve to isolate gas supply after each flashback, severe back pressure and pressure differential caused by upstream leaks. The valve closes in the same direction as the gas flow ensuring that it cannot be reopened by the gas inlet pressure. Operation is indicated by a signal lever, after resetting the lever, the arrestor is again ready for immediate operation.
3. Spring-loaded non-return valve to prevent slow or sudden backfeeding. It is protected from the flashbacks by the downstream arrestor element.
4. Temperature activated cut-off valve cuts off the gas supply automatically if internal temperature reaches a dangerous level. This may be caused by internal burning or external fire.
5. Large surface area flame arrestor of sintered stainless steel to extinguish any flashback entering the device. The cylindrical shape gives high flow capacity.
6. Explosion pressure relief valve to vent excessive pressure to atmosphere protecting the downstream hose. Products of combustion and debris created by a flashback are also vented here to minimise deposits on the arresting element extending the service life. BOe F I Flashback Arrestor, conform to EN730, ISO 5175 and other national standards (details on request)