Axis Wakeboard Boat Forum

So I just picked up some fly high 750s (specific to T23/A24 etc) and after installing them was surprised to find they were stepped. Haven't seen them advertised anywhere online shaped like this. They only have 3 fittings - one bottom front, bottom rear and one on top. The top fitting is the vent fitting for burping the sac. I have a 2015 T23 and the bottom lines fit more or less (no problems with kinks the first weekend).

Question is - looking in the rear trunk, after fore and aft lines are attached, I have a third line coming from the upper/outboard hull side that is attached to the fill valve (currently in the closed position). I assume this is a fill line where the pumps would fill the bag directly from the top instead of filling the bag via overflow from the hard tanks (once they're full) through the bottom fittings. Can I just buy a 1 inch flow rite fitting and swap out the vent plug and attach the top fill line? If I do this, I don't see how I can vent the bags anymore - But if I have another fill line, I assume they'd fill much faster.

Doesn't make sense that the 2017 bags would take a away a top fitting thereby increasing fill time. Do the later model Axis PNP systems do away with the upper fill line?

Any advice?

I feel that extra "fill" line/valve is kinda pointless. In the 15 and older boats they ran a Y fitting off the fill pump, 1 line goes to the hard tank and the other is that fill line with the valve. The pump is gonna push what it's gonna push with flow. In my buddies 13 A22 and my other buddies 15 T23 I closed those valves off and plugged off the female flowrite 90° fittings then tucked the lines away. I plumbed in vent/overflow lines into the drain line coming off the hard tanks. Didn't notice the rear tanks and bags taking longer to fill. If you don't want to add vent/overflow line I would close off the valve and run the vent plug in the bag so you can manually vent them. 16 and up Axis boats do not have that fill line.

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