Why are dual gas valves necessary with spark ignition systems?

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Dual gas valves are essential in systems with spark ignition because they serve a critical safety function by preventing gas from reaching the combustion chamber when the system is in the off cycle. This is important in ensuring that unburned gas does not accumulate, which could pose an explosion risk or create a hazardous situation when the ignition system is powered off. By using dual gas valves, the system can effectively manage the flow of gas and enhance safety by ensuring that gas is only introduced into the combustion chamber when the ignition source is actively producing a spark.

In contrast, other options may not directly address the primary safety concern addressed by dual gas valves. While constant gas flow, multiple ignition sources, and temperature regulation are relevant factors in gas systems, they do not specifically highlight the necessity of dual gas valves in preventing gas leakage during inactive cycles. The focus on safety and preventing gas accumulation is the core reason for their implementation in spark ignition systems.

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