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On 6/28/24 8:16 AM, Zani, Gerald via Phys-l wrote:
Can someone recommend an air valve for a homemade air cannon?
Perhaps this? https://assuredautomation.com/news-and-training/pumpkin-chunkin-valve-assembly/ More generally, try googling for pumpkin cannon valve. The pumpkin guys are highly competitive, which suggests they've researched the issue.