The HyFLO™ is a streamlined, one-piece bite valve that offers fast-flowing, self-sealing, leak-free performance. Made with a soft, taste-free, medical-grade silicone, the HyFLO stands up to years of use. The bite valve is included on all Big Zip™ EVO & Hoser™ Reservoirs and is compatible with all legacy Platypus shutoff valves.
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