supply of flash back arrestor (dry type) for regulator end of oxygen lines.flash back arrestor (dry type) for regulator end of oxygen lines.,flash back arrestor (dry type) for regulator end of oxygen lines to prevent flash backs in oxy fuel system conforming to en 730/iso 5175-1/is 11006 standards with flame arrestor (fa) and non return valve (nrv) and thermal c ut off valve (tv) working pressure:15 bar. end connections g 3/8 rh to en 560/iso 3253 standards. make: messer (dgn oxy) or esab (protex ro) or gce (fr-34 r oxy) or weldstar or witt only . note:1) offers of oems or their authorized dealers enclosing valid authorized dealership certificate only will be considered. 2) the suppliers shall send test certifica te from govt. authorized test house. in case of international brand, the test certificate from reputed institute like bam, g ermany is mandatory. 3) the suppliers should have equipments for testing of flash back arrestors and calibration. the p urchaser has the right to inspect these installations. specn: en 730/iso 5175-1/is11006. ]