supply of flash back arrestor , flash back arrestor(dry type) for torch end of acetylene/lpg lines to prevent flash backs in oxy fuel syste m conforming to en 730/iso 5175-1/is 11006/2011, (ra-2021), amd-1 of dec-2013 standards with flame arrestor (fa) and non r eturn valve (nrv) working pressure: 1.5 bar for acetylene/5.0 bar for lpg. end connections g 3/8 lh to en 560/iso 3253 s tandards. make: messer (cg-91 fuel) or esab (fr-18) or gce (fr-20t fuel) or weldstar or witt only. note:1) offers of oems or their authorised dealers enclosing valid authorised dealership certificate only will be considered. 2) the suppliers shall send test certificate from govt. authorised 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 testing of flash back arr estors and calibration. the purchaser has the right to inspect these installations. as per specn. en 730/iso 5175-1/is 1100 6/2011, (ra-2021), amd-1 of dec-2013 [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]