Have you ever seen a car’s tyres pop and sending rims or people flying everywhere? No? Good, let’s try and keep it that way. Pressure is serious business and it can be very dangerous if not managed or maintained properly. Every cylinder that is manufactured needs to be maintained to ensure the safety of those using them, or who are in the vicinity.
How do you maintain these cylinders, you may ask? Hydro testing. According to South African law each pressure vessel bigger than 0.5l capacity needs to be hydro tested every 4 years. If a cylinder is out of date it will not be filled as it poses a deadly risk for you and those around you. An average CO2 or Carbon Dioxide cylinder contains 60Bar worth of pressure. That’s 30 times more than the average car tire!
This applies to all your compressed air cylinders, a normal 48/3000psi tank contains 207Bar. You can imagine if this cylinder pops what it could do. Output pressure gets down to about 60Bar and even with a regulator, still is a bomb. You can also get carbon fibre cylinders, they contain 300Bar worth of pressure.
The same rule applies to scuba tanks, these get tested twice in a four year period. During the production of tank it is tested and stamped. After 2 years it has to go in for a visual inspection to make sure the internal is not rusted. It has to be followed up within the following 2 years with a complete hydro test. All tests falling within the 4 year period.
Please make sure you follow these rules that we all stay safe in this.