Propane Gas Cylinder - 3.5535 Disposable propane gas cylinder. Ideal for jet torch, quick fire, super fire 2 and micro fire. MAP/Pro Gas Cylinder - 3.5536 Based on a stabilised mixture of methylacetylene (propyne) and propadiene. MAPP gas is safer than acetylene; There is no 15psi limit and it can to use on board ships and in mines. delivers higher temperatures than propane. Although acetylene has a higher flame temperature (3160C, 5720F), MAPP has the advantage that it requires neither dilution nor special container fillers during transport, allowing a greater volume of fuel gas to be transported at the same given weight, and it is much safer in use.