Comes up every now and them, I use and have always advocated 90 deg ones for ease of inflation but has occurred to me that since going tubeless the only time I air up is once, when fitting tyres.
Weekly checking is out the window now, very rare I do, no pressure loss ever on any of mine
So about tp do my ebikes too and just got these from Amazon
Not only because they’re cheap but can’t see why they won’t work on moto conversions too, esp Guzzi cast wheels, I had 3 goes on them with off the shelf before finding suitable valves with rubber seal on the air side
These look like they’re made for those wheels
They come in all manner of colours, weigh nothing
Did I mantion they’re cheap ?