To what pressure should the oxygen tank gauge never drop below?

The correct pressure for the oxygen tank gauge to never drop below is 500 psi. Maintaining this pressure is crucial for ensuring that there is a sufficient supply of oxygen available for emergency situations. When the gauge drops below this level, it signals that the tank is nearing empty, which can compromise the ability to provide necessary oxygen to patients or in situations requiring immediate medical attention. This threshold helps ensure that operators are prepared and can respond effectively to emergencies without delays caused by inadequate oxygen supply.

In emergency equipment practice, recognizing the importance of maintaining the proper pressure in oxygen tanks can directly impact the effectiveness of emergency response, as well as ensure safety and readiness in critical situations.