The breathing systems on all Kirby Morgan helmets and masks are simple and highly reliable. The fact that they can continue to operate when the components are not in a well-maintained condition can cause divers to become complacent about maintenance. Your life depends on the correct function of this equipment! While Kirby Morgan helmets and masks are simple to maintain, like any type of life support equipment, they do require regular periodic maintenance to function properly. All parts disassemb