What is the pressure of CNG in a cylinder?
CNG is filled in the cylinder up to a maximum of 200kg/cm(about 3000psi/g). CNG has a 700 degree Centigrade ignition temperature compared to 455 degree Centigrade for petrol. The range of 4 to 14 per cent in which CNG mixes with air by volume for combustion is small. Storage is far safer than for petrol, as CNG cylinders are designed and built from special materials and to high safety specifications.