What is the typical operating pressure range for the air supplied in a surface-supplied diving system like the MK-20?

In a surface-supplied diving system such as the MK-20, the typical operating pressure range for the air supply is indeed between 150 to 300 psi. This pressure range is essential to ensure adequate airflow to the diver while minimizing the risk of issues such as air supply interruption or ineffective breathing.

Operating within this pressure range allows the system to deliver a sufficient volume of air to counteract the increase in water pressure as the diver descends. It also helps maintain the diver's comfort and safety by providing consistent and reliable air under different operational conditions. Higher pressures within this range ensure that the air can overcome the resistance encountered in hoses and equipment, delivering a steady supply of breathable air to the diver at significant depths.

Understanding the need for adequate pressure is crucial in diving operations, as it supports the divergence of air supply systems designed to ensure safety, efficiency, and reliability during underwater activities.