supply of flash back arrestor for torch end and regulatorflash back arrestor for torch end and regulator,flash back arrestor(dry type) for regulator end of acetylene/lpg lines to prev ent flash backs in oxy fuel system conforming to en 730/iso 5175-1/is 11006 standards with f lame arrestor(fa) and non return valve(nrv) and thermal cut off valve(tv) working pressu re: 1.5 bar for acetylene/5.0 bar for lpg. end connections g 3/8 lh to en 560/iso 3253 standa rds. make: messer(dgn fuel) or esab(protex ra) or gce(fr-34 r fuel) only. note:1) offers of o ems or their authorised dealers enclosing valid authorised dealership certificate only wil l be considered. 2) the suppliers shall send test certificate from govt. authorised test hou se. in case of international brand, the test certificate from reputed institute like bam, ger many is mandatory. 3) the suppliers should have equipments for testing of flash back arres tors and calibration. the purchaser has the right to inspect these installations. as per spec n. en 730/iso 5175-1/is 11006 . [ warranty period: 30 months after the date of delivery ] ] , flash back arrestor (dry type) for torch end of acetylene/lpg lines to prevent flash backs in oxy fuel system conforming to en 730/iso 5175-1/is 11006 standards with flam e arrestor (fa) and non return valve(nrv) working pressure: 1.5 bar for acetylene/5.0 bar f or lpg. end connections g 3/8 lh to en 560/iso 3253 standards. make: messer (cg-91 fuel) or e sab(fr-18) or gce(fr-20t fuel) only. note:1) offers of oems or their authorised dealers encl osing valid authorised dealership certificate only will be considered. 2) the suppliers shal l send test certificate from govt. authorised test house. in case of international brand, th e test certificate from reputed institute like bam, germany is mandatory. 3) the suppliers sh ould have equipments for testing of flash back arrestors and calibration. the purchaser has the right to inspect these installations. as per specn. en730/iso