Camelbak Crux Reservoir On/Off Valve On or Off, There's No In-Between If you need a new on/off valve for your Camelbak Crux Reservoir, then you're in the right place. The Camelbak Crux Reservoir On/Off Valve is designed to connect the hose from your reservoir to your bite valve so you can control the flow of water. It has a 45deg bend that perfectly positions the Big Bite Valve for easy drinking. Features Ergonomic on/off valve that makes it easy to grip the tube and toggle while you're shredding45deg bend that perfectly positions the Big Bite Valve for easy drinking Self-seals after each drink to eliminate annoying drips BPA/BPS/BPF/R2D2 Free for the purest taste | Camelbak | Crux Reservoir On/off Valve Lever Only