Tube Assembly, 432 Valve 21 to the Left Vial and Valve 21 to the Right Vial. If you need to change both the Left & Right Vial tubes, you will need 2 of this tube assy. One end has a 6-32 minstak Lee fitting and the other end is thin so it can be pulled through the vial cap. Once pulled through the vial cap, the tube needs to be cut to the correct length. The tube in the Left Vial needs to be cut close to the inside of the vial top while the tube in the right vial needs to extend to the bottom of the vee in the right vial.
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