Grayl Geopress One-Way Drink Mix Valve

Drinkable water doesn’t always taste great. If you like to add a little flavour or electrolytes to your filtered water, this little one-way valve lets you do just that, without compromising your Grayl’s filter. Tucking perfectly into the center of the filter, this valve lets clean water flow through to your favourite drink mix, without letting any of the drink mix flow back into the filter.

• Food grade silicone construction
• 6 one-way valves provide a fast flow rate
• Easy installation and removal
• Valve is dishwasher safe
• Works with GeoPress® bottles and cartridges sold after Spring 2023. If you’re not sure if your filter will work, check the water intake ports, if your filter’s ports are horizontal, you’re good to go! If your filter’s ports are vertical, then this one-way valve will not fit