Tender For supply of 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 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 connections g 3/8