Last weekend I made a schnozzel for my Exped Synmat UL 7 by taping a 3-inch piece of irrigation pipe into the corner of my old trash compactor bag. It only increased the weight of the bag by 8 grams (0.3 ounces)! See photos and captions below for more information.
Completed bag. The cork seals the opening during dry bag use. The extra piece of pipe is shown for reference only to see the total length of piece I taped into the corner.
Closer view. To get a good seal between the pipe and Exped valve I wrapped some tape around the end of the pipe until the outside diameter was about the same as a wine bottle cork.
Another view of the DIY schnozzel.
