
Please note: Platypus products can only be shipped to U.S. addresses.
Made in USA.
Item 813800
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Reviewed by 3 customers
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Displaying reviews 1-3
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Comments about Platypus GravityWorks/CleanStream Replacement Cartridge:
I used the original filter for a group of 4 for 500 miles on the Colorado Trail last year - it worked great most of the time and after a couple hundred gallons the original slowed down to 20minutes/gallon (not great, but manageable). One thing that is critical is clearing the air out of the filter by backflushing each time you use it to get optimal speed. Even with regular backflushing, the performance of the filter slows over time and it is frustrating that there is no other way to clean it since it is completely sealed. However, since this filter requires minimal active work, you can filter as you rest/snack. I gave several REI presentations after this trip and recommended the product (with original filter design).
My wife did the Colorado Trail this year (2012), and since I didn't want any problems for her, bought this replacement filter for her trip with my son. However, after about 20-30 gallons the filter slowed way down to 40-60 minutes per gallon and was impractical to use. Kids and I joined them for the last 125 miles (total of 7 people supported by this single filter) and had to do all our filtering the night before (3+hours of filtering) and carry all water for the day (sometimes 20lbs of water) because there wasn't enough time to do it throughout the day as we crossed water streams - very frustrating. We backflushed several times and worked hard to remove air to optimize performance, but still couldn't get more than 1 gallon every 40+ minutes through it. I'm getting another replacement filter, and hoping this one performs better.
Pros
Cons
Best Uses
Comments about Platypus GravityWorks/CleanStream Replacement Cartridge:
I just came back from a 3-day trip in the slot-canyons east of Zion NP, Utah. Whenever we found a spring this filter would fill up four of us in just a few minutes. It's brand-new now and filters a liter in under a minute. Very impressive.
Pros
Cons
Best Uses
Comments about Platypus GravityWorks/CleanStream Replacement Cartridge:
This system easily supported 24 backpackers on a trek. As far as a group filtration system, I could find no better for the price, weight, and functionality
Displaying reviews 1-3
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