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I'm giving you the points because you provided a reference. I think I should go with valve. On a previous question, I opted for vacuum supply line instead of valve,the client preferred valve. Thanx. 4 KudoZ points were awarded for this answer
Explanation: Here are a few suggestions as alternatives:
Sample/ ing nozzle
Of course sampling device is general and can cover just about anything
BOB DE DENUS Local time: 15:09 Native speaker of: English, French PRO pts in category: 8