comments:
WaterDog_ posted on r/inflatablekayak2w
As noted, the HR valve is common on higher pressure inflatables and is often included with many pump fitting packs. The more unique adapter is the proprietary AE adapter than screws onto the fitting while opening the valve. That one is uncommon but I have seen it on AZ and AE's website. https://a.co/d/0ffGn92j