supply of flash back arrestor (dry type) for regulator end of acetylene/lpg lines , flash back arrestor (dry type) for regulator end of acetylene/lpg lines to prevent flash backs in oxy fuel system conforming to en 730/iso 5175-1/is 11006/2011, (ra-2021),amd-1 of dec.2013 standards with flame arrestor (fa) and non return valve (nrv) and thermal cut off valve (tv) working pressure: 1.5 bar for acetylene/5.0 bar for lpg. end con nections g 3/8 lh to en 560/iso 3253 standards. make: messer (dgn fuel) or esab (protex ra) or gce (fr-34 r fuel) or weld star 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 ca se of international brand, the test certificate from reputed institute like bam, germany is mandatory. 3) the suppliers s hould have equipments for testing of flash back arrestors and calibration. the purchaser has the right to inspect these installations. as per specn. en 730/iso 5175-1/is 11006/2011,(ra-2021), amd-1 of dec 2013. [ warranty period: 30 months aft er the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]