I present to you a tap for bottles. Unfortunately, I could not overcome the problem of complete waterproofness of plastic, water gradually seeps through the walls when the bottle is turned upside down. But in any case, you will have to turn the bottle back to replenish the lost air.

To increase the length of the faucet, print additional copies of the extension or extrude the extension in any editor convenient for you.

Print the sealant only from TPU plastic.