GEOPRESS® One-Way Silicone Valve
GEOPRESS® One-Way Silicone Valve
GEOPRESS® One-Way Silicone Valve
GEOPRESS® One-Way Silicone Valve

GEOPRESS® One-Way Silicone Valve

$12.00
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Shipping calculated at checkout.

A feature no other drink-thru filter bottle can deliver, the GeoPress® One-Way Valve allows electrolytes and sport drink mixes to be added to clean purified water without compromising the integrity of the filter.

Only compatible with 2nd Generation cartridges first sold in April 2023 that include a new "core" and "flow channel" design (horizontal vents).

  • Enjoy a drink-mix no matter where your adventure takes you. Replace electrolytes lost in sweat and hydrate quickly.
  • Six duck bill valves prevent back flowing of water (or other beverages) through the Cartridge while also allowing clean filtered water to pass through the Cartridge into the Inner Press.
  • Easy to remove for care and use between uses. Thoroughly dry a wet Cartridge by pressing into an empty (no water) Outer Cup, then dump any excess water. Remove the One-Way Valve and allow Cartridge to air-dry thoroughly (depending on humidity it will take 2-4 days to completely dry). Clean and dry the One-Way Valve, then reassemble GeoPress Bottle.
  • One-way valve is dishwasher safe. Regularly wash Valve between uses to remove smell and residue left behind from powders or other beverages. Hand wash with warm, soapy water or place in a dishwasher. Do not expose Cartridge to soap or cleaning agent of any kind.
  • Size: 2.25" (5.8 cm) H x 1" (2.6 cm ) W
  • Weight: .42 oz (12 g)
  • Compatibility. Only compatible with GeoPress® bottles and cartridges sold on Grayl.com in Spring 2023 that feature a 2nd generation cartridge with horizontal flow channels (stacked in groups of six). 1st generation cartridges will not be able to accommodate a valve.
  • BPA-Free Materials. Made from food-grade silicone.
  • Origin. Designed in USA, made in China.

Warranty: One-Way Silicone Valve is accompanied by a ten (10) year warranty covering workmanship and materials.

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Overall rating: 4.9001737 / 5 from 1152 reviews.

AI Generated Review Summary

The GEOPRESS® One-Way Silicone Valve is praised for its high-quality design, excellent filter performance, and great taste. Customers appreciate the ease of use and the ability to add electrolytes without compromising the filter's integrity. The product is also noted for its compatibility with specific cartridges and its suitability for long-term purification needs.

Summary topics

  • Purifier Performance (5%): Customers loved the GRAYL water purifier, considering it the best on the market.
  • Replacement Cartridges (3%): Customers appreciated the great replacement cartridges for their GeoPress purifier, highly recommending the product.
  • Filter Performance (21%): Many customers expressed satisfaction with the filter, stating it is excellent, awesome, and top tier.
  • Water Taste (6%): Customers expressed satisfaction with the water filter, stating that it tastes great and is easy to use.
  • Product Quality (4%): Customers appreciated the high quality of the product, which was mentioned multiple times in the reviews.

Review topics: ["size","fit","color","issues","design","weight","looks","addition","quality","comfort","customer service","feels","packaging","solution","performance","price","difference","results","value","filter","plastic","wife","light","water","bottle","tasting","purifier","system","works","cartridge"].

Review highlights

  • "Easy peasy and clean tasting water." — Eric N.
  • "Being able to make clean tasting water was important, got the person to keep drinking water and electrolyte mixes." — Chris S.
  • "Like a French press for clean water that taste great too!" — Rudy J.

Reviews

Best tasting water!

"I love my Grayl water bottle and filter. As an avid hiking, it’s indispensable. It’s easy to use and lasts a long time. I even tried it in nasty tap water with great tasting water as a result. It is a great product!"

— Chris P. (5/5)

Great product

"Took this on my last backpacking trip and it was so convenient. Filters water way faster and easier than my Sawyer Squeeze. I also like that it helps with heavy metals since Colorado has lots of old mines and I'm never sure what might be contaminating the streams. My only issue with it is it's bulky and heavy, but I'll still take it with me anyway because you can't beat the convenience."

— Christopher M. (4/5)

Great for travel!

"We originally bought the Grayl Geopress Purifier for our backpacking and camping trips. Lately, we've taken it on all our travels - whether in the US or out of the country. Having the Geopress saves us from having to buy expensive airport or hotel bottled waters. Wherever we go, we have access to good tasting, clean water! We decided to have an extra cartridge on hand since we've been using the purifier so much!"

— Dianne S. (5/5)

Love this filter!

"Looking forward to more adventures with my Grayl water bottle and filter. It works so well on backpacking trips and I love the white water bottle because you can easily see the water level."

— Bridget S. (5/5)

Only lasted 5 days

"Did the North Coast trail with a brand new filter and after 4-5 days it became impossible to filter water. Yes, most of the water on the trail was colored with tannins, but Grayl’s suggestion to ‘find alternative water sources’ is basically saying that you can only use this $125 filter bottle in optimal clean water situations, which most of the hiking is not. There were no alternatives and I spent 15+ minutes(!) filtering one bottle. Outrageous for the price."

— M (1/5)

Great product

"World travel is my passion. Reliable, clean drinking water is a must! My Grayl water bottle has been with me to 30 odd countries leaving no plastic bottle waste or stomach issues!"

— Sallie D. (5/5)

Love the titanium shell and

"Love the titanium shell and cap a perfect combination with the filter"

— John D. (5/5)

Geopress Replacement Filter

"Finally had the funds & a Discount to try this out. . . The Sawyer Squeeze Filter & CNOC 2L/3L are my go to, for Price & water sustainability, where you need several Litres of water per Hour. . . So for day to day use, the Grayl System, is a good option, but can't replace the time a Sawyer saves!!! Get the Price of the Filter down to $10 & it would be more feasible!!!"

— Michael R. (5/5)

Awesome product!

"Great concept and equally good water."

— Sean P. (5/5)

Ease of use

"Lock in and filter then drink. Use a few times first"

— Simon M. (1/5)

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