Where should oil shut off valves be installed for best practice?

Installing oil shut-off valves immediately adjacent to the burner supply connections at the bottom of the supply tank is considered best practice for several reasons.

Firstly, this location allows for rapid access in case of an emergency or system maintenance, enabling quick shutdown of the oil flow directly at the source before it reaches the burner. This is crucial in preventing any potential leaks or fires that could occur in the burner area.

Secondly, situating the valve close to the burner supply connections minimizes the length of the fuel line that remains pressurized when the system is shut down. This reduces the volume of oil that could potentially leak if there is a malfunction, contributing to a safer environment.

Furthermore, having the shut-off valve in this position aligns with regulations and standards set for oil heating systems, ensuring compliance and promoting the longevity and reliability of the equipment.

In contrast, placing the shut-off valve at locations like the top of the supply tank or at the midpoint of the supply line can create operational difficulties or safety hazards during maintenance or in emergency situations. A valve near the main fuel line entry point might be effective for isolating the entire system but does not address the safety concerns as effectively as positioning it close to the burner supply connections does.