- Product Dimensions: 9.8 x 9.8 x 17.7 inches ; 6.6 pounds
- Shipping Weight: 8.3 pounds (View shipping rates and policies)
- Domestic Shipping: Item can be shipped within U.S.
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- Shipping Advisory: This item must be shipped separately from other items in your order. Additional shipping charges will not apply.
- ASIN: B0007U011G
- California residents: Click here for Proposition 65 warning.
- Item model number: 2110080
- Average Customer Review: 37 customer reviews
- Amazon Best Sellers Rank: #216,810 in Sports & Outdoors (See Top 100 in Sports & Outdoors) Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.
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Katadyn TRK Drip Gravidyn Water Filter
|Price:||$258.65 & FREE Shipping. Details|
|You Save:||$36.30 (12%)|
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|Item Dimensions||17.72 x 9.84 x 9.84 inches|
|Item Weight||6.61 pounds|
|Shipping Weight||8.3 pounds|
|Sport Type||Camping & Hiking|
He Katelyn Drip gravity water Filter is a Self-Contained, stand alone gravity Filter. The Katelyn gravity free-standing gravity Filter has 3 Ceramic and carbon filters and a 10-liter water container for large quantities of water. It's ideal for the water supply for camps, cabins and homes without running water. The Katelyn Drip gravity dual filtration element for the Drip offers Ceramic and activated carbon filtration.
The Katadyn TRK Drip Gravidyn free-standing gravity filter features a 10 liter water container for large quantities of water. It's ideal for the water supply for camps, cabins and homes without running water. This Gravidyn version comes with three combined ceramic and activated carbon filter elements.
Ceramic filters have a micro porous structure with impregnated silver which delays the growth of bacteria. The pore-size of Katadyn ceramic filters is 0.2 micron (0.0002 mm). Bacteria range in size from 0.2 to 5 micron and, like protozoa (1 to 15 micron), are efficiently filtered out. Ceramic filters can be mechanically regenerated and the filter capacity is measurable.
Activated carbon is used for its ability to reduce harmful organic and inorganic substances in the water. It removes unpleasant tastes, odors, chlorine, pesticides (lindane, DDT) and trihalomethanes (THMs). These substances adhere to the large surface area of the activated carbon. Activated carbon granulate cannot be regenerated.
- Technology: 0.2 micron ceramic depth filter
- Output: ca. 4 liters/hour
- Cartridge Capacity: Up to 150'000 l (depending on water quality)
- Carbon Capacity: Recommended to change after 6 months
- Weight: ca. 3.3 kg
- Size: 25 x 45 cm (9.8 x 17.7 inches)
Why Treat Water?
A crystal-clear stream or lake usually contains microorganisms that can make you sick. Water contaminants like protozoa, bacteria and viruses, can cause serious illness. Optimize your travel preparation and use a portable drinking water system from Katadyn.
Katadyn of Switzerland has been producing high quality portable water systems since 1928. Their history has been one of innovation and durability. Katadyn products are used by militaries, health organizations and outdoor adventurers world-wide. No other water system provides higher quality or longer lasting performance. Katadyn is the global leader in portable water treatment. With subsidiaries in the United States, Germany, France, and Singapore; Katadyn develops, produces and distributes high quality products which are used whenever safe drinking water isn't available--for travel, camping and humanitarian operations.
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Top customer reviews
I was on the fence between the Gravidyn and the Ceradyn. The Ceradyn uses ceramic-only filters, which as I understand it, are effective filtration against biological hazards (e.g. bacteria, water-borne diseases, etc.) but which do not filter out inorganic pollutants (e.g. pesticides). The Gravidyn filters contain ceramic elements as well, but they also contain charcoal, which filters (at least reduces, if not eliminates) pesticides etc. The "ceramic-only" Ceradyn filters last much longer (the charcoal in the Gravidyn filters is only good for 6 months, and the filter must be replaced after that) but in my case, I felt it was more important to get the maximum filtration possible, so I opted for the Gravidyn.
Good fact to know, however -- Katadyn confirmed to me that the Gravidyn filters are compatible with the Ceradyn base, and the Ceradyn filters are compatible with the Gravidyn base (I suspect the base unit is exactly the same, and the replaceable filter elements are the only thing that differs between the two models). So, if I ever decide that I want to go with the "ceramic-only" approach, I can simply purchase some Ceradyn filters and use those in my Gradidyn base (and, presumably, vice-versa). You'll find that the cost of the filter elements is the real expense for this product anyway.
As far as the Gravidyn unit itself goes, I am very happy with it so far (after a couple weeks of using it). When I first screwed the spout piece on, I had a slow, small drip-leak around the spout, where it connects to the base, so I unscrewed it, adjusted it slightly, and screwed it back on, a littler tighter than the first time. Since then, I haven't had any issues with any leaking or dripping.
The concept behind this filter is as simple as it gets -- pour water in the top part, and gravity will do the rest, as the water passes through the filer an into the lower part of the unit. A typical spout is the clean water outlet. I ran one 10-liter batch of water through the first time, and discarded that, per the instructions. After that, I have noticed that the filter started working a little quicker over time. It's pretty simple to keep this thing filled up, I have been filling it up (or half-filling it) at night before I go to bed, and by the morning we always have plenty of clean water to start the day.
We set ours up in the kitchen, and now use it for all of our drinking/cooking water. I'll probably always keep one extra set of filter elements on-hand (there are three).
I had been considering the Big Berkey filter system, and truth be told I do prefer the stainless-steel of the Berkey. However, I simply trust the Katadyn filters more, and since the plastic Katadyn unit is BPA-free, I'm not concerned about using plastic instead of stainless steel.
The Stainless Works valve has a much higher flow rate for filling water bottles or pots for cooking and is also drip free. If you have time to let the water filter work longer, as in you don't need a bunch of water ASAP, you can restrict this down to one filter in use and keep the other two for the six-month change out cycle without buying a new set of three. Also, the filter will still function as the Ceradyn does after the six months is up, as long as the ceramic still has a sufficient diameter after however many cleaning cycles it went through. I thought I read a review somewhere where someone had mold growing in the upper reservoir. If the water you're putting in the top is anything other than clear and clean looking, I would prefilter it through a coffee filter or something. Also, if you place a silver coin in the top it will stop bacterial growth since silver is antibacterial. It also helps against SOME viruses. You may or may not want a silver coin in the bottom storage reservoir if it takes a long time to use up the water between cycles (a single person who isn't home much?) or for extra insurance. The pioneers who settled the West reportedly used silver coins in their water storage barrels to prevent bacterial growth and in their milk pails to keep the milk fresh longer.
I've only had it a couple of days and flow rate filter wise, it's ok so long as the top 'bucket' is full. With 10L in the top, I got about 5L in the bottom in like 3 hours. Once the top gets down to half full then the flow rate slows significantly but it's still trickling through.
Overall, I'm happy with the purchase. It'll stop us buying bottled water now and will help if we need to clean water if there is an emergency.