supply of flash arrestorflash arrestor,flash arrestor (dry type) for regulator end oxygen lines to prevent flash back in oxy fue l system conforming to en 730/iso 5175-1/15 11006 standards with flame arrestor(fa) and non return v alve(nrv) and thermal cut off valve(tv) working pressure 15 bar end connection g 3/8%u201d rh to en 560/iso 3253 standards make messer(dgn oxy) or gce(fr-34 r oxy) or witt (oxygen rf53n only note: 1) of fers on oems or their authorised dealers enclosing valied authorised delership clarification on will be considered. 2) the suppliers shall send test certification from govt. autherised test house in case of in in case of interntional brand the test certificate from reputed institue like bam germany is mand atory. 3) the suplier should have equipment for testing of flash back arrestors and calibration. the p urchaser has the right to inspect these installations. spec: en 730/iso 5175-1/15 11006 specn: spec: en 73 0/iso 5175-1/15 11006 [ warranty period: 12 months after the date of delivery ] ]