03136 03136 03136

GravityWorks™ Replacement Reservoirs

GravityWorks™ Replacement Reservoirs

C$ 109.95
4.0L Kit
2.0L Kit (Dirty Reservoir Only)
6.0L Kit
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Replaces worn reservoirs or expands capacity of existing systems.

  • Unique, dual-layer laminate combines a rugged exterior with a food-grade, taste-free interior.
  • Reservoirs are interchangeable with any GravityWorks system, allowing you to create the capacity you need for any trip.

4.0L Kit includes: 4.0L Dirty Reservoir with Quick Disconnect and 4.0L Clean Reservoir.

2.0L Kit Includes: 2.0L Dirty Reservoir with Quick Disconnect.

These replacement reservoirs make it easy to change out worn-out or damaged reservoirs or conveniently adapt the capacity of your existing GravityWorks system to meet the needs of any trip.
  4.0L Kit 2.0L Kit 6.0L Kit
SKU 03136 06953 11170
Weight (Standard) 6 oz 2.2 oz 6.5 oz
Weight (Metric) 0.17 kg 0.06 kg 0.18 kg
Width (Standard) 8 in 7 in 10 in
Length (Standard) 15 in 13 in 19.5 in
Material(s) Polyethylene Polyethylene
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 Assembled in U.S.A. of U.S. and Imported Materials
How do I use my Reservoir Cleaning Kit to clean my reservoir?

Our Reservoir Cleaning Kit comes with two brushes: one long, thin brush and one shorter, wider brush. These are used to scrub different parts of your hydration reservoir.


The long, skinny brush is made to clean your drink tube. Keeping a finger in the hoop at the end of the brush, you can use the brush on the opposite end to scrub the inside of your drink tube. Note: When detaching your drink tube to clean, it's easiest to access the interior of your drink tube through the end with the bite valve.


The shorter, wider brush is used for scrubbing the interior of your reservoir. Simply hold on to the obvious handle, and use the bristled end to scrub at any visible dirt or residue inside your reservoir.

How do I install my Bite Valve Cover?
First, remove your HyFLO™ Bite Valve from your shutoff valve. Next, insert the base of the Bite Valve Cover over the tube, and push it all the way down. Open the top of the Bite Valve Cover, and re-insert your HyFLO Bite Valve onto the shutoff valve with the base of the Bite Valve Cover between the bite valve and the shutoff valve. Last, close the top of the Bite Valve Cover. Voila!
How do I use my Big Zip™ EVO Filter Connector Kit?

The Big Zip™ EVO Connector Kit is a nifty accessory that allows you to filter directly from your GravityWorks™ into your Big Zip EVO without ever having to remove your reservoir from your pack.


To do so, you first need to remove your drink tube from your reservoir via the quick-disconnect. Then, plug the connection point on the connector kit's hose directly into the quick-disconnect point (you will hear a click). Next, attach the connector kit's hose to the base of your GravityWorks filter cartridge. Let gravity do the rest, as you're now on your way to clean, taste-free hydration.


Watch this video for step-by-step instructions on how to use this product, CLICK HERE

How do I install my Drink Tube Insulator with my Platypus pack?

To install your Drink Tube Insulator with the Big Zip™ EVO in your pack, follow these steps:

  1. Unzip and open the zippered portion of the Drink Tube Insulator.
  2. Inside your pack, disconnect the drink tube from the reservoir via the quick-disconnect attachment. Remove the disconnected drink tube from the pack.
  3. Feed the quick-disconnect end of the drink tube through the zippered portion of the insulator sleeve until the bite valve is centered in the covered, zippered area.
  4. Thread the quick-disconnect end of the drink tube and the non-zippered end of the insulator sleeve through the hydration access point at the top of the pack, positioning the bite valve within the zippered end in the desired location along pack shoulder strap.
  5. Reconnect the drink tube to the reservoir via the quick-disconnect attachment point.
  6. Secure the Drink Tube Insulator to the pack shoulder strap using the hook and loop fastener.

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Orders Shipped in 1-2 Days

We do our best to get all orders out within one business day, Monday through Friday. Learn More

No Hassle Returns

We accept returns within 30 days of purchase. All returned items must be in new condition. Please be sure no dirt, grass or pet hair is on the item you are returning. Learn More

We Believe in What We Build

At Platypus, we take pride in engineering the highest-quality outdoor gear available, and we stand behind everything we make. Platypus gear is built to be exceptionally durable and easily repaired. And we back it up with the best service in the industry, all to keep your gear performing for you—and out of landfills. Visit our Platypus Warranty page for more info.

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