CamelBak bite valve dust cover cap replacement
The hinged dust cover on a CamelBak Big Bite valve or Crux tube gets chewed off or lost on the first ride, leaving the valve to collect trail grit. This replacement is a 22 mm inner diameter cap with 1.5 mm walls that snaps over the valve's collar, a 3 mm hinge strap that loops around the 12 mm tube behind the valve so the cap dangles when open, and a small pull tab. Print it in TPU 95A for a soft, food-safe-adjacent seal and a quiet snap; PETG works for a rigid version.
Bite valves from CamelBak, Osprey Hydraulics and Source all differ by a couple of millimetres, so a downloaded cap either will not snap on or falls off in the pack. Measure your valve collar and tube, give the numbers to SpeakCAD, preview the cap free in the browser, refine the snap in the chat, then download the STL.
Model a bite valve dust cap with a 22 mm inner diameter, 12 mm deep pocket and 1.5 mm walls, a 0.8 mm inward snap lip, a 3 mm wide 40 mm long hinge strap ending in a 12.4 mm ring for the drink tube and a 6 mm pull tab.