Recently added item(s) ×

You have no items in your shopping cart.

  • Awesome Gear, Amazing Service

Platypus GravityWorks 4.0L Filter System


Availability: In Stock!

Ships tomorrow.

Availability: In Stock!

Ships tomorrow.
Item # PTSE4202
Perfect for base camping or larger group backpacking
trips, the Platypus GravityWorks 4.0L Filter System utilizes innovative Hollow
Fiber technology to offer pump-free water filtration.
100% Satisfaction Guaranteed

Shop with Confidence - 1-Year No-Matter-What Returns




The Platypus GravityWorks 4.0L Filter System utilizes innovative Hollow Fiber technology to offer pump-free water filtration. Perfect for base camping or larger group backpacking trips, the GravityWorks 4.0L Filter System includes a 4.0L Dirty reservoir and 4.0L Clean reservoir.

The groundbreaking Hollow Fiber Technology used by the GravityWorks 4.0L Filter System enables it to efficiently and effectively filter 4 liters of water in just 2.3 minutes! Simply fill the 4.0L reservoir marked "Dirty," suspend it from a branch using the strong clip webbing, and allow gravity to filter the water into the "Clean" BPA-free 4.0L reservoir. The "Clean" reservoir disconnects for easy dispensing.

The 0.2 Micron cartridge exceeds EPA guidelines and is completely field maintainable and long lasting, effectively filtering up to 1,500 liters of water (depending on water quality) before needing replaced! The GravityWorks 4.0L Filter System can be backflushed in seconds to clear the filter of debris and the streamlined, lightweight filter housing is durable and saves on weight and space.

NOTE: The Platypus GravityWorks 4.0L Filter System meets all EPA and NSF guidelines for the removal of protozoa, bacteria and particulates. It is NOT effective against viruses.

  • High-capacity storage and filtration
  • 4L Dirty reservoir and 4L Clean reservoir
  • SlimeGuard antimicrobial treated reservoirs
  • Clean reservoir disconnects for easy dispensing
  • Clip webbing for easy hanging
  • Bold graphics for quick identification
  • Corner mounted valve for better packing



Best Use Camping
Warranty Limited Lifetime
Removes Bacteria, Protozoa and Particulates
Other SlimeGuard Antimicrobial-Treated Reservoir
Item Weight 11.5 oz
Flow Rate 1.75 liters per minute
Field Maintainable Yes
Filter Material 0.2 Micron Hollow Fiber Technology
Capacity Up to 8 Liters


Real Customer Reviews

Average Rating:
(based on 13 real customer reviews)

1-10 of 13

  1. 1
  2. 2
Worth it for Ease of Use
Reviewed by Les H. - June 11, 2018

Likes: Easy to filter water without much effort
Packs well

Dislikes: None

Set it and Forget it
Reviewed by Nayvin C. - May 31, 2018

Likes: Super Easy to use, convenient. Can filter a large amount at once

Dislikes: Wish the clean bag had an easier way to dispense water as opposed to having to unscrew the inlet.

works great
Reviewed by Paul E. - May 30, 2018

Likes: good system. great for multiple people-base camp

Dislikes: none

Fast filter
Reviewed by Logan S. - April 13, 2018

Likes: I've used other water filters and this so far is my favorite. Filters really quick, and is super easy, just hang it up on a tree somewhere.

Dislikes: None so far

Worked well
Reviewed by Brandy S. - March 7, 2018

Likes: Fast. Easy. Water taste was good.

Dislikes: Dirty water bag is hard to close.

Simple, efficient
Reviewed by Jason W. - May 29, 2017

Likes: -so easy to set up and use
-works by gravity, which is usually pretty abundant, so no energy wasted pump-filtering

Dislikes: None

Great for groups and frees up time
Reviewed by Dwayne C. - July 20, 2016

Likes: Fast, filtered water while I set up my tent.
easy to clean
sturdy construction
does exactly what it's ,marketed for

Dislikes: everyone drinks my water instead of carrying their filters now

Awesome set up
Reviewed by JP - June 15, 2016

Likes: Super easy to use. Everything is labeled, which is great. Love the fact that the strap to hang has a buckle.

Dislikes: N/A

great filter system! works easily and quickly.
Reviewed by Mike M. - February 22, 2016

Likes: The filter does a nice job of providing clean and tasty water quickly. I love the gravity feed system, makes it easy to use . Great for using with a group to fill up everyone's bottles and cooking water. packs down nicely and lightweight.

Dislikes: None

Platypus Gavity Works Filter System
Reviewed by Laura K. - December 27, 2015

Likes: Love this product used on a 7 day backpacking trip - quick, easy filtration of water.

Dislikes: None

Earn Gear Points for Reviewing Products

Join our FREE Inside Edge program and receive 20% off a full-price item. Earn discount points for reviewing items you purchase and receive exclusive discounts.

What are points?
As a member you can share reviews of items you purchase and we'll reward you with discount points valued at 5% of the item's original purchase price.

It’s EASY and it’s FREE.

Sign Up Today »