Which of the following statements about service regulators in high-pressure gas systems is true?

Service regulators play a critical role in managing gas pressure in high-pressure gas systems. They are designed to reduce the high inlet pressure of gas from the main supply line to a lower, usable pressure for distribution within a building or facility. This is essential for ensuring that appliances and equipment operate safely and efficiently.

In the context of individual service lines, the use of service regulators can depend on local codes, regulations, and the design of the gas system. In many cases, service regulators may not be required on individual residential service lines if the inlet pressure is already at a safe and usable level for household appliances. This allows for a more straightforward installation and reduces the complexity, as well as the cost, of the gas system.

Understanding when and why service regulators are necessary is crucial for professionals in the field, as it ensures adherence to safety standards while also acknowledging that not all systems will require the same level of pressure regulation.