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Building a Vacuum Filling System: Valves & Fine Leaks
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[QUOTE="gleem, post: 5455852, member: 298988"] Regarding the Swaglok fitting, do you finger tighten the fitting then use the standard 1-1/4 turn tightening procedure? also your 1/8" tubing may not be round enough or have a too irregular surface to get an adequate seat. I seem to remember seeing a ball valve used with a backing pump (although not as small as yours) so maybe you just chose the wrong brand. I think you can get vacuum rated manual valves with "O" ring seals but I do on think that they are made as small as you would like. Unless you have a method of locating the leaks you will have a hard time dealing with the problem. [/QUOTE]
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Building a Vacuum Filling System: Valves & Fine Leaks
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