I didn't think mine were labeled either when I first looked at the valves but I had to take my hat off and get my eye above the top of the manifold to see the stickers, I then used a Sharpie to put an initial for each one next to each valve. Then I don't have to look every time and don't have to use more gray matter to remember which is which. So little usable stuff left... Dave and Betsy
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