4.6.6.3.(1)

Intent 1:

To limit the probability that vehicle impact on, or mechanical damage to, the valve mounting area will lead to failure of the valve and piping, which could lead to the escape of liquid, which could lead to harm to the public.

Intent 2:

To limit the probability that vehicle impact on, or mechanical damage to, the dispenser will lead to failure of the dispenser piping, which could lead to the escape of liquid, which could lead to harm to the public.