Can flexible oil lines be used to connect up a Tigerloop?

Caould anybody please tell me whether flexible oil lines can be used for connecting a Tigerloop?

I have a copper supply pipe from the tank to the house. The tank is above the level of the burner.

I have a flexible oil line connecting the end of the copper supply pipe to the burner/boiler. I am going to install a new oil tank below the level of the burner and so understand that I must fit a Tigerloop. However, rather than mess about with copper piping, I would prefer to use flexible oil lines instead for connecting the Tigerloop to the supply pipe and burner/boiler.

Thanks