What component is used in oxygen systems to convert high cylinder pressure to low system pressure?

The component used in oxygen systems to convert high cylinder pressure to low system pressure is the pressure reducer valve. This valve is specifically designed to reduce the high-pressure output from the oxygen cylinder to a safe and usable low pressure that can be delivered to the system.

The pressure reducer valve is essential for ensuring that the oxygen pressure remains within the operational limits of the equipment it feeds, protecting the system from damage and ensuring consistent performance. This function is crucial in maintaining safety and efficiency in the cabin atmosphere control system, especially in aviation applications where the correct oxygen pressure is vital for crew and passenger safety.

In contrast, while a pressure gauge measures the pressure within a system, it does not convert pressure levels. A pressure relief valve serves as a safety mechanism to release excess pressure, but it does not regulate pressure for normal operation. Similarly, a flow control valve manages the rate of gas flow but does not adjust the pressure levels from the high cylinder output. Thus, the pressure reducer valve stands out as the critical component for this purpose.