supply of flash back arrestor (dry type) for torch end of oxygen lines , flash back arrestor (dry type) for torch 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 r eturn valve (nrv) working pressure: 15 bar. end connections g 3/8 rh to en 560/iso 3253 standards. make: messer or esab or gce or weldstar or witt only. note: 1) offers of oems or their authorized d ealers enclosing valid authorized dealership certificate only will be considered. 2) the suppliers shall s end test certificate from govt. authorized test house. in case of international brand, the test certificate from reputed institute like bam, germany is mandatory. 3) the suppliers should have equipments for t esting of flash back arrestors and calibration. (product catalogue to be attached during quote for refer ence) [ warranty period: 12 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ]