NHRA Fuel Cells rules

Oh ok I guess I just misunderstood how a fuel pressure regulator with return works. Sorry for the "slow" moment there.

But yes that is what I am saying about my fuel cell. It has only 2 fittings on it, on top. One with a check ball and the other with the stand pipe. But I guess how do I know if the cap is vented or not? From the general NHRA rules it says the cell must be vented outside the body. Since the cell is used I wonder how the last guy vented it or if he did at all. Just want to be compliant and make sure I pass tech the first time.