supply of 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 ox y fuel system conforming to en 730/iso 5175-1/is 11006 standards with flame arrestor (fa) and non return valve (nrv) and thermal cut off valve (tv) working pressure:15 bar. end connections g 3/8 rh to en 560/is o 3253 standards. make: messer (dgn oxy) or esab (protex ro) or gce (fr-34 r oxy) or weldstar or wi tt only . note:1) offers of oems or their authorized dealers enclosing valid authorized dealership certificat e only will be considered. 2) the suppliers shall send test certificate from govt. authorized test house. in ca se of international brand, the test certificate from reputed institute like bam, germany is mandatory. 3) the suppliers should have equipments for testing of flash back arrestors and calibration. the purchaser has the right to inspect these installations. specn: en 730/iso 5175-1/is11006. [ warranty period: 12 months afte r the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]