What role do shut-off valves serve in a bulk oxygen system?

The primary function of shut-off valves in a bulk oxygen system is to provide isolation between different zones. This is crucial for several reasons. First, it allows for the safe maintenance and servicing of specific sections of the system without the risk of displacing oxygen to other parts where it may not be needed or where work is being conducted. By isolating these zones, personnel can effectively manage issues without compromising the entire system.

Furthermore, proper isolation is essential for safety. In the event of a leak or issue in one zone, shut-off valves can be closed to contain the problem, preventing oxygen from propagating to other areas and minimizing the risk of fire or explosion. They ensure that each section of the oxygen system can function independently or be shut down when necessary, which is vital in settings such as hospitals where oxygen supply needs to be reliable and safe.

Each of the other options addresses different aspects of gas systems but does not pertain specifically to the role of shut-off valves. For example, increasing pressure is related to pressure regulators, controlling flow rate involves flow meters or regulators, and measuring gas purity would typically rely on gas analyzers.