What device removes most contaminants from the oil before it reaches the burner?

The strainer or filter is specifically designed to remove solid contaminants and particulates from the oil before it is delivered to the burner. This is crucial for maintaining the efficiency and longevity of the burner system. By filtering out impurities such as dirt, rust, and other debris, the strainer ensures that only clean oil is used in the combustion process.

Using a clean oil supply helps prevent clogs and blockages within the burner, which can lead to inefficient operation or even failure of the system. Additionally, it helps in achieving a more efficient combustion, resulting in better energy use and reducing emissions. This filtration process is critical for ensuring the safe and effective operation of low PSI oil burners.

The other devices listed serve different functions; for instance, a separator is typically used to remove water from the oil, while a pre-heater warms the oil to improve its flow characteristics. A chamber might refer to combustion or storage areas, but these do not specifically address the removal of contaminants before they reach the burner.