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Make sure the small Insert Fitting is inserted into the end of the tube. |
Insert Fitting. This small part is easily lost when disassembling the Crossover Tube or Outlet Tube. Keep a few on hand if you need. |
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Use no teflon tape here. These are not sealing threads. Also do not use teflon tape on the tube itself. |
Very important: there must be a groove in the tube for the nut to catch on. If the groove is not deep enough, or has been damaged, you can cut it deeper with a knife. |
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The sealing surfaces of the nut catch onto the groove in the tube, which keeps the tube from pulling out. |
Tube showing Insert Fitting, Tube Groove, and Nut, ready to insert into the Tee Fitting. |