The lever at the top is my SodaStream is broken seeking replacement.

The lever at the top is my SodaStream is broken. I am seeking replacement part. Please advise process.

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crwdns2894050:0crwdne2894050:0

crwdns2889612:0crwdne2889612:0 0
crwdns2892346:0crwdne2892346:0