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Platy Water Tank

Collapsible water tanks with Big Zip openings

Having a few extra gallons of water around makes everything easier. Unfortunately, having a giant empty container around doesn’t. That’s the beauty of our Water Tanks: these collapsible tanks pack flat and our Big Zip opening makes filling and cleaning a breeze.

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$34.95
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Having a few extra gallons of water around makes everything easier. Unfortunately, having a giant empty container around doesn’t. That’s the beauty of our Water Tanks: these collapsible tanks pack flat and our Big Zip opening makes filling and cleaning a breeze.
  • 2, 4 and 6L sizes
  • Wide-mouth Big Zip™ opening is easy to fill and clean
  • Taste-free and BPA-free for clean drinking
  • Embedded silver-ion protects the tank from mold and bacteria
  • Freestanding design is stable on rough surfaces
Made in U.S.A. of U.S. and Imported Materials
2 LTR 4 LTR 6 LTR
Color No No No
Style No No No
Capacity (Standard) 70 fl. oz 140 fl. oz 210 fl. oz
Capacity (Metric) 2 liters 4 liters 6 liters
Weight (Standard) 2.7 oz 3.6 oz 4.4 oz
Weight (Metric) 66.4 g 103 g 123.8 g
Width (Standard) 7.5 in 8.25 in 9.5 in
Width (Metric) 19 cm 21 cm 24 cm
Length (Standard) 12 in 16 in 18 in
Length (Metric) 31 cm 41 cm 45.5 cm
Film PU/PE PU/PE PU/PE
Spout material PE PE PE
Zip material EVA/LLDPE EVA/LLDPE EVA/LLDPE
Country of Origin Made in U.S.A. of U.S. and Imported Materials Made in U.S.A. of U.S. and Imported Materials Made in U.S.A. of U.S. and Imported Materials
No. All Platypus hydration products are 100% BPA- and BPS-free, and are made with durable urethane and food-grade, taste-free polyethylene interiors.
Use hot, soapy water and rinse thoroughly with hot water. For tough cleaning jobs, add 1/4 cup of baking soda to 3/4 cup of water per liter volume of your bottle or reservoir and shake for 30 seconds. Add 1/4 cup lemon juice, shake 10 seconds, and vent by loosening cap away from face. Repeat shaking and venting three times. Expel as much air as possible, cap bottle, and allow to soak 20 minutes. Rinse three times with hot water. Caution: When adding lemon juice to baking soda, effervescence occurs and will cause pressure to build in a capped Platypus product.
Platypus bottles can be dried by blowing a little air into them to expand them and letting them stand uncapped until the water evaporates. Hang Hoser™ reservoirs from their carry loop to dry. Drying Big Zip™ reservoirs is easy, with a dishtowel through the large opening. Then prop them open with the SlideLock slider and let them air dry. Another great way to dry all reservoirs and bottles is with a plastic bag dryer, widely available at kitchen supply stores and numerous online retailers.
You can put a variety of beverages in your Platypus bottle or reservoir. Just make sure you clean it thoroughly after each use to prevent bacteria from growing in the reservoir and/or tube.
To disinfect, fill the reservoir or bottle with a solution of unscented household bleach and water at a concentration of 2-5 drops per liter of water. Close and mix for 10 seconds. Fill hoses and bite valves by squeezing bite valve, being careful to keep valve over sink. Leave filled overnight. Rinse thoroughly and air dry. For a more planet-friendly alternative, use a chlorine-free, hydrogen peroxide-based bleach alternative like Free and Clear™ available from Seventh Generation®.
A frozen Platy bottle makes a great ice pack and, during the dog days of summer, delivers a steady source of cold, refreshing hydration. Lay it half-full on its side in freezer with all air purged. Do not over-fill. Water expands as it freezes and this can burst your reservoir or bottle.
Does your hydration system have a shutoff valve? If so, it may be closed. Open it by twisting the bite valve 90 degrees (Clockwise closes it, Counter-clockwise opens it). If that doesn’t work, you may be biting the valve too hard. The Platy HyperFlow Bite Valve is designed so that you don’t need to bite very hard. If you bite too hard the flow will be completely cut off. With your teeth, compress the valve lightly (only 30% to 50%) and water should flow.
The best way to restore a snug fit between the bite valve and the drinking tube is to remove the bite valve from the drinking tube. Next, cut a small section off the end of the drinking tube. Clean the bite valve and hose with rubbing alcohol, lick the end of the drinking tube and place the bite valve back on the end of the drinking tube. After it dries, there should be an excellent seal.
Using our Bite Valve & Drink Tube Insulator is an easy solution to deter freezing. Additionally, to help prevent the water in the reservoir from freezing, start off the day with warm or hot water in the reservoir, then pack your extra clothing layers around it. To help keep drink tubes and bite valves from freezing up, sip often to maintain flow, and, after you’ve finished drinking, blow any residual water back into the reservoir. Also, even if you are using the Bite Valve & Drink Tube Insulator, it still helps to keep as much of the drinking tube covered as possible, such as routing it inside a pack, strap, or jacket.

First, remove your HyperFlow™ bite valve by pulling straight out and off the hose. Then simply slide the cover onto the hose and reattach your bite valve.

Yes. Periodically adding a little Vaseline to the tracks will keep them supple and easy to close. Wipe away excess Vaseline to keep it from getting in your water and to prevent it from collecting dirt. In the field, a little lip balm or similar item can do the trick.
Absolutely. Simply turn your reservoir upside down after filling it. Then simultaneously squeeze the reservoir and the HyperFlow bite valve until all the air is purged. Bye, Bye sloshing.

E-mail: Cascade Designs Service Center
Tel: 1-800-531-9531

Yes. Simply remove the bite valve on your hydration system and connect the end of the hose directly to your filtration system’s outflow port. Using a GravityWorks™ filter system, your reservoir can take the place of the supplied Clean reservoir, creating what is arguably the lightest, most compact and efficient way possible to get water. GravityWorks™ filters are available with direct-to-reservoir and direct-to-bottle adapters for optimum versatility.
MikeInKC
July 28, 2016
Yes, I would recommend this to a friend
easy to close, durable, no taste or smell
I bought this to carry ice in a cooler (and perhaps for backpacking and canoe tripping). Keeps the cooler contents dry and the ice water is available to drink. Will hold most, if not all, of a 10 lb bag of ice cubes (depends on the size of the cubes). I found the bag easy to open and close with my hands when both bag and hands were wet and ice cold. Much easier than my older Platy Big Zip bags where I have to use my teeth/jaw to close. Perhaps the design has changed (?) as I read the reviews before buying and was prepared for the closure to be difficult.
DavidD
July 7, 2016
No, I would not recommend this to a friend
Disappointing
I have used this bottle on several extended AT hikes. Although it does hold the water well it's virtually impossible to 'ZIP' close. I finally quit trying and deal with it being open and sloshing around while I'm walking and carrying it with water in it. IF I could find anything other product that was comparable in volume I'd pitch this one. I do not recommend it.
Wapiti
October 8, 2015
No, I would not recommend this to a friend
Seam seal is a pain.
I bought these bags to haul water from streams to my base/spike camps for water consumption needs in Colorado(washing dishes, filtration for drinking, cleaning, etc). They did the job, but rarely was I ever able to affectively seal the zip seams on these bags especially when my hand were wet and cold from filling them up with cold water. These bags are robust, foldable, and ultra light weight for back packing, but the seams are poorly designed for the practical hunter/camper. These bags require a significant amount of hand strength and dexterity to close in cold weather conditions, but they work really well IF and when you can seal them correctly

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