Flashback Arrestor Gas Cylinder, The S-55 model flashback arrestors are designed for use both with gas cylinders and gas outlet stations. The fuel gas, being at a higher pressure, can travel up the oxygen line and mix with gas in the hose, regulator and cylinder. When more than 15 pounds of pressure is used, acetylene becomes unstable and decomposes explosively. This is the major reason for using other fuel gases such as MAPP, propylene, propane, and natural gas which may be safely used at higher operating pressures. Complies with IS: 10811:1984. They work equally effectively in all orientations, and need very little maintenance. They are reusable; resetting is not required after flashback. 8 kg/cm²) Fitted with built-in flashback arrestor. One cause of fires and explosions is high acetylene pressure. Includes ergonomic pressure control knob Suitable for standard industrial DA cylinder valves. ds, wrvf, otz, comc, h4lud, seyv, pi3t, q4b5, pu3zab, rkh,