This multi-use kit includes a high-flow Blaster Bite Valve and Pressure Activated Valve for adventurers seeking a versatile dispensing hydration system.
Hydrapak says:
Rinse. Spray. Drink. The Hydrant Tube Kit converts your HydraPak reservoir or Seeker storage bag into a hands-free pressurized hydration system, equipped with an easy-to-use squeeze bulb that sprays water at your command.
Hydrapak's Hydrant Tube Kit is a novel idea, one of the best uses of it is cleaning your pots etc. you can get good pressure behind a squeeze to squirt away leftovers.