Which of the following is a component of a natural gas piping system?

• A. Gas meter
• B. Water heater
• C. Thermostat
• D. Refrigeration unit

Answer: (A)

A gas meter is an essential component of a natural gas piping system as it measures the volume of gas supplied to a building or facility. The gas meter is crucial for monitoring usage and billing purposes, ensuring that consumers are charged appropriately for the gas they consume. It plays a fundamental role in the overall safety and efficiency of the gas supply system by allowing for both regulation and management of gas distribution.

In contrast, while a water heater, thermostat, and refrigeration unit may use gas as a fuel source or control mechanism, they are not components of the gas piping system itself. These items are considered end-use appliances that utilize gas but do not directly relate to the infrastructure responsible for the transport and measurement of natural gas within a building's system. Thus, the gas meter stands out as the primary component involved in the functioning and administration of a natural gas piping system.