76 Projects' HI FLOW valves have 4x the air throughput and a redesigned core that helps prevent sealant build-up.
Tubeless bike tyres and rims were introduced 20 years ago yet tubeless systems still use the Presta valve standard. The clearances in a Presta valve are smaller than the holes that sealant is supposed to be able to block so it's no surprise that the valves get clogged.
Size 0 - 9-20mm rim height*
Size 1 - 15-35mm rim height*