Which component on a gas valve can be adversely affected by improper lubrication?

The tapered plug in a gas valve is critical for controlling gas flow. It is designed to fit snugly within the valve body, either opening or closing the passage for gas depending on its position. Proper lubrication is essential for this component because it ensures smooth operation, prevents seizing, and minimizes wear over time. If the tapered plug is not lubricated correctly or if inappropriate substances are used, it can lead to increased friction, making it difficult to operate the valve. This could result in the plug not sealing correctly, causing gas leaks or inconsistent gas flow, which could be hazardous. Thus, maintaining proper lubrication of the tapered plug is crucial for the safe and effective operation of gas valves.