OXY ACETELYNE CYLINDER FLASH BACK ARRESTOR
2006-10-02 20:37:28 · 2 answers · asked by TONY 1 in Science & Mathematics ➔ Engineering
http://www.admin.ox.ac.uk/safety/s601.shtml
2006-10-02 20:55:12 · answer #1 · answered by deepali s 3 · 0⤊ 0⤋
A flashback (a shrill hissing sound) is when the flame is burning inside the torch. The flame may pass back through the torch mixing chamber to the hose. The most likely cause is incorrect gas pressures giving too low a gas velocity. Alternatively, a situation may be created by a higher pressure gas (acetylene) feeding up a lower pressure gas (oxygen) stream. This could occur if the oxygen cylinder is almost empty but other potential causes would be hose leaks, loose connections, or failure to adequately purge the hoses.
A flashback arrestor is an automatic flame trap device designed not only to quench the flame but also to prevent the flame from reaching the regulator.
2006-10-03 08:26:34 · answer #2 · answered by Marianna 6 · 0⤊ 0⤋