What is the significance of a 'lickup' in oil piping?

The significance of a 'lickup' in oil piping is primarily associated with its role in maintaining a steady supply of oil to the burner. Specifically, a 'lickup' is designed to help prevent oil from draining back into the tank when the burner is off. This function is critical because if the oil were to drain back, it could lead to air entering the oil line, which would make restarting the burner difficult. By ensuring that the oil line remains filled and primed, the 'lickup' facilitates easier and more reliable ignition of the burner when needed.

In essence, the effectiveness of a heating system hinges on the ability of the burner to receive oil consistently; therefore, the 'lickup' plays an essential part in maintaining that operational readiness and efficiency in oil heat systems. This context illustrates its importance in the functionality of oil delivery in heating applications.