NFPA-99 Practice Exam

What is required downstream of each regulator or immediately downstream of the isolating valves for the regulators?

1. Ball valve

2. Demand check fitting

3. Final line filters

4. Pressure indicator

The correct answer is: Pressure indicator

The requirement for a pressure indicator downstream of each regulator or immediately downstream of the isolating valves is rooted in ensuring safety and monitoring within gas distribution systems. A pressure indicator provides a visual and/or digital readout of the pressure in the system, allowing personnel to monitor the performance of the gas system continually. Pressure indicators play a critical role in identifying any fluctuations or drops in pressure that could indicate a malfunction or leak, which is essential for maintaining the integrity of medical gas systems. They are crucial for ensuring that the correct pressure levels are maintained, which is vital for patient safety, particularly in healthcare settings. By having a pressure indicator in this placement, operators can quickly verify that the system is functioning correctly and providing a consistent gas supply at the desired pressure levels. This monitoring capability is crucial for maintaining compliance with safety standards and ensuring patient safety, especially in environments where the reliability of gas delivery is paramount.