What is the term for protective devices used to manage gas flow in a plumbing system?

The term for protective devices used to manage gas flow in a plumbing system is commonly recognized as "gas regulators." These devices are essential for controlling the pressure and flow of gas, ensuring that it is delivered safely and efficiently to appliances and systems.

Gas regulators work by reducing the high pressure of gas from the distribution system to a lower, usable level for the user’s appliances. This regulation is critical for preventing any potential hazards that might arise due to excess pressure, such as leaks or explosions, thus enhancing safety in gas usage.

Understanding the role of gas regulators is important for professionals in plumbing and gas fitting, as they are a fundamental component in ensuring that gas systems operate safely and within regulatory standards. Other devices listed, such as gas valves, serve different functions, primarily related to controlling the on/off flow of gas rather than regulating its pressure.