Answer :
Final answer:
The safe residual for an oxygen cylinder is 200 psi, ensuring that there's enough pressure for emergency use and regular operation of the regulator.
Explanation:
The safe residual for an oxygen cylinder is 200 psi. This is the minimum pressure level that should be maintained in an oxygen tank to ensure it can still provide oxygen in the case of an emergency and to allow for proper operation of the pressure regulator. It is critical to respect this safety guideline to prevent any risk of hypoxia due to an unexpectedly empty oxygen cylinder.
