supply of flash back arrestor ( dry type ) flash back arrestor ( dry type ) , flash back arrestor ( dry type ) for torch end of acetylene / lpg lines to prevent flash backs in oxy fu el system conforming to en 730 / iso 5175-1 / is 11006 standards with flame arrestor ( fa ) and non return valve ( nrv ) w orking pressure: 1.5 bar for acetylene / 5.0 bar for lpg. end connections g 3 / 8 lh to en 560 / iso 3253 standards. mak e: messer ( cg-91 fuel ) or esab ( fr-18 ) or gce ( fr-20t fuel ) 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 cer tificate from govt. authorised test house. in case of international brand, the test certificate from reputed in stitute like bam, germany is mandatory. 3 ) the suppliers should have equipments for testing of flash back arre stors and calibration. the purchaser has the right to inspect these installations. as per specn. en 730 / iso 5175-1 / is 11006 [ warranty period: 30 months after the date of delivery ] => limited