hose connection diameters: better a bit too big or too small?

[Upstate12866]

I am trying to make a fluid transfer tool using a plastic Y connector and some lengths of hose. My hose is 8mm ID. I see connectors listed with 7.2mm or 8.8mm ID.

My fear is that going from 8mm to 8.8mm tube, even for a couple inches, might create a frothy chamber that oxidizes or agitates the beer. My fear with 7.2mm is losing 10% of the diameter (and the speed of transfer) for no good reason when I could have bought a bigger one and avoided a "bottleneck".

I wonder, would it hurt to use that 8.8 mm ID connector?

 

[3 Dawg Night]

I've seen air ingestion with too-large tubing on barb connectors before. I can't speak specifically to whether 0.8mm is too big of a gap. I'd be more concerned with matching the OD of the connector up to the ID of the tubing (assuming that the connector fits inside the tube).