Attaching the "Elbow" to an SU Fuel Pump

Many of our customers seem perplexed by the little "elbow" assembly that connects the SU fuel pump to the flexible fuel line to the carburetors on an MG.

Here are a few photos in order, showing how the assembly goes together and how it attaches to the pump. Note that I have used the inlet side of the pump for an example only, the elbow would go on the outlet side of pump, but the procedure is the same, I am not reshooting the photos!