supply offlash back arrestor(dry type) for torch end of acetylene/lpg lines to prevent flash backs in oxy fuel system conforming t o en 730/iso 5175-1/is 11006 standards with flame arrestor(fa) and non return valve(nrv) working pressure: 1.5 bar for acetylene/5.0 b ar for lpg. end connections g 3/8 lh to en 560/iso 3253 standards. make: messer(cg-91 fuel) or esab(fr-18) or gce(fr-20t fuel) only. not e:1) offers of oems or their authorised dealers enclosing valid authorised dealership certificate only will be considered. 2) the suppl iers shall send test certificate from govt. authorised test house. in case of international brand, the test certificate from reputed ins titute like bam, germany is mandatory. 3) the suppliers should have equipments for testing of flash back arrestors and calibration. th e purchaser has the right to inspect these installations. spec:en 730/iso 5175-1/is 11006 [ warranty period: 30 months after the date of deliver y ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]