The valve has a factory problem ?
The truth is that I'm thinking of buying a used core kite, which is in really good condition but as the seller says the only problem is that the valve is cracked but there is no leak of air. So, maybe it's not leaking air today but who knows for tomorrow? If it has a crack, in the future can be expanded. Other brands are selling their valves through individual sellers and dealers. Core on the other hand does not sell this new valve even in the Core Store:https://store.corekites.com/
This is why I'm asking where someone can buy this valve. If I ask a dealer, he will communicate with the Core company and get one for me, but I guess this will take time and is not the same to know that replacement valves are sold in abundance in shops...