PSA nitrogen generator is not only one machine, it is one kind of system, includes air compressor, air storage tank, frozen dryer, filters, air buffer tank(option) PSA nitrogen generator, nitrogen buffer tank and nitrogen storage tank(option). Basically PSA nitrogen generator is took the compressed air to be source air, and separate nitrogen and oxygen in the compressed air physically, so it is safe, but how to choose the dependable machine is very important, because there are many machines in the system, we need to focus on all the quality and performance.Of course the perfectly match is most important, depend on the PSA nitrogen generator requirement, the other machine will be fixed. So if more detail please contact with us.