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K Series Carbon Filters

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Filtration Stages: 3-Stage Advanced

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Product Details
Product Type Core Filter
Filtration Stages 3-Stage / 4-Stage
Compatibility Purewell K Series & SS Series Filter Systems
Package Quantity 1 Box / 2 Filters
Filter Life Up to 6,000 Gallons per Box
Flow Rate Up to 4 Gallons per Hour with 2 Filters Installed
Use For Gravity Water Filter Systems
Filter Size Approx. 2.64 in × 8.66 in / Φ6.7 × 22 cm
Box Weight Approx. 1.32 lb Net / 1.46 lb Gross
Filtration Options & Item Numbers

3-Stage Advanced

Item No. K8012
Filter Material
  • Activated Carbon
  • Silver Ion
  • Hollow Fiber UF Membrane
Key Functions
0.01 μm Pore Size Removes Bacteria Reduces Chlorine

4-Stage Reduce Fluoride

Item No. K8014
Filter Material
  • Activated Carbon
  • Silver Ion
  • Fluoride Reduction Material
  • Hollow Fiber UF Membrane
Key Functions
0.01 μm Pore Size Removes Bacteria Reduces Chlorine Reduces Fluoride

4-Stage Raise PH Level

Item No. K8015
Filter Material
  • Activated Carbon
  • Silver Ion
  • Alkaline Material
  • Hollow Fiber UF Membrane
Key Functions
0.01 μm Pore Size Removes Bacteria Reduces Chlorine Raises PH Level
Use Notes
01

Choose 3-Stage Advanced for everyday filtration with activated carbon, silver ion, and UF membrane filtration.

02

Choose 4-Stage Reduce Fluoride if you want added fluoride reduction in addition to the core filtration layers.

03

Choose 4-Stage Raise pH Level if you want core filtration with an added alkaline material layer.

04

Designed for Purewell K Series and SS Series gravity water filter systems.

05

Also works as a replacement option for select ProOne Big+ / Big II Series and Berkey BB9-2 style systems, including Travel, Big, Royal, Imperial, Light, and Crown Berkey Series.

06

Flush filters before first use and replace them when the rated capacity is reached or when water flow becomes noticeably slower.

Note: Filter life and flow rate may vary depending on source water quality, usage frequency, and maintenance conditions. Always check your system size and filter compatibility before purchase. Third-party brand and model names are used for compatibility reference only.
User Guide
Carbon Filter Guide

How to Use the Carbon Filter

Follow these simple steps to prepare, install, and use your carbon filter correctly.

Step 01

Prime the Carbon Filter

Before installation, place the washer and wing nut correctly, then rinse the carbon filter under running water.

1
Remove the wing nut and filter washer, then place them back on the threaded stem in the correct position.
2
Make sure the washer and wing nut are positioned securely before connecting the filter to the faucet.
3
Rinse the carbon filter for at least 60 seconds, or until the water runs clear.
Tip: Priming helps flush loose carbon particles before the filter is installed.
Visual Guide Assemble → Tighten → Rinse
Place the washer and wing nut on the filter stem.
Tighten the wing nut until the parts fit correctly.
Rinse for at least 60 seconds until water runs clear.
Step 02

Install the Carbon Filters

Insert the threaded rod of each carbon filter through the upper chamber, then secure it from below.

1
Place the threaded rod of the carbon filter through a filter washer.
2
Insert the filter into the hole in the upper chamber.
3
From below, add the remaining washer and wing nut, then tighten securely.
Tip: Make sure each filter is stable and sealed before filling the upper chamber.
Visual Guide Upper Chamber → Installed System
Insert filters into the upper chamber and secure from below.
The system is ready after both filters are installed.
Step 03

Important Notice

Follow these guidelines to help maintain normal water flow and avoid improper use.

1
Do not use the filter to filter hot water.
2
This filter cannot remove color from beverages such as cola.
3
This filter cannot reduce the TDS value of water.
4
At the beginning of filtration, keep enough water in the upper chamber to support gravity-fed water pressure.
5
If the filter will not be used for more than 3 days, remove all filter elements and allow parts to dry.
6
Do not use detergents to clean the filter elements, as this may cause clogging.
Please follow the installation guide and use the filter correctly for proper operation.
Care Tips Use Correctly
°
No Hot Water
Use only cold or room-temperature water.
×
No Colored Drinks
Do not use the filter for cola or other colored beverages.
T
Does Not Reduce TDS
This filter is not designed to reduce TDS values.
Keep Enough Water
Sufficient water helps maintain gravity-fed flow.
3
Dry if Unused
If unused for over 3 days, remove filters and let parts dry.
!
No Detergents
Clean without detergents to help prevent clogging.
How It Works

How Gravity Filtration Works

Water flows from the upper chamber through the filter elements by gravity, then collects in the lower chamber and is ready to dispense.

1. Add Water

Pour water into the upper chamber. No electricity or plumbing is required.

2. Gravity Pulls Water Down

Water naturally moves through the filter elements by gravity.

3. Filtered Water Collects Below

Filtered water collects in the lower chamber and is ready to pour from the spigot.

Filter Replacement

Filter Replacement Guide

Replacing filters on time helps your filtration system keep working properly. It also helps maintain water flow, drinking water taste, and everyday use confidence.

!
Track Usage Time & Filter Life

Filter life may vary by water quality, usage frequency, and total water volume filtered.

Rated Filter Life Reached

Replace the filters when they reach the rated lifespan listed for your filter model.

Water Flow Becomes Slower

If filtering takes much longer than usual, clean or replace the filters as needed.

Taste or Odor Returns

If unwanted taste or smell becomes noticeable again, it may be time to replace the filters.

Source Water Matters

Rain, river, stream, or well water may shorten filter life compared with regular tap water.

What to Check Before Replacing Filters
Confirm Compatibility

Choose filters that match your filtration system, filter series, and setup.

Prepare New Filters

Prime, rinse, or flush new filters according to the product instructions.

Check Seals & Washers

Make sure washers, seals, and threaded parts are installed correctly.

Clean the System

Empty and clean the upper and lower chambers before installing new filters.

Replace Sets Together

If your system uses paired filters, replace matching filters together when needed.

Record the Date

Write down the replacement date and set a reminder based on your usage.

Filter & System Replacement Checklist

Use this checklist to choose the right replacement filter for your Purewell system and check whether it may also fit select compatible systems from other brands.

Filter Category Filter Type Fits Purewell Systems Other Compatible Systems
K Series Carbon Filters (Pro) Core Filter SS Series and K Series filtration systems. Select ProOne Big+ / Big II and Berkey BB9-2 style systems.
K Series Carbon Filters Core Filter SS Series and K Series filtration systems. Select ProOne Big+ / Big II and Berkey BB9-2 style systems.
K Series Carbon Filters (Classic) Core Filter SS Series and K Series filtration systems. Black Berkey Elements style systems and select Berkey gravity systems.
K Series Ceramic Filters Core Filter SS Series and K Series filtration systems. Most gravity-fed systems from major brands, including Berkey, ProOne, Alexapure, Waterdrop, Doulton, Boroux, Culligan, and more.
SS Series Square Carbon Filters Core Filter SS Series and K Series filtration systems. Select ProOne Big+ / Big II and Berkey BB9-2 style systems.
SF Series Multi-Functional Filter Core Filter SF Series filtration systems. Select Zero pitchers and dispensers.
BO Series Unique Compound Filter Core Filter BO Series filtration systems only. Not intended for K Series, SS Series, or other gravity filtration systems.
K Series Specialty Add-On Filters Supplemental Filter Use together with K Series or SS Series core filters. Select Travel, Big, Royal, Imperial, Light, and Crown Berkey models as an additional filter option.
Filter replacement frequency directly affects the service cycle of your filtration system. Timely replacement helps support water flow, filtration performance, drinking water taste, and long-term system reliability. Actual filter life may vary based on source water quality, usage frequency, and total water volume filtered.
Video

Carbon Filter Installation & Care Videos

Watch these quick video guides to prepare, install, and maintain your Purewell carbon filters correctly. Proper setup and care help support steady water flow and everyday filter performance.

Pre-Use Preparation

Clean Before Installation

This video shows how to clean or rinse Purewell carbon filters before installation. Preparing the filters before first use helps support a cleaner setup process.

Recommended before first installation Helps prepare new carbon filters for use Useful before installing or replacing filters
Installation Guide

Carbon Filter Installation

This video shows how to install Purewell carbon filters for compatible gravity water filter systems. Follow the guide before first use or when replacing old filters.

Suitable for Purewell carbon filter setup Helps confirm correct filter position Recommended before first use or filter replacement
Maintenance Guide

Carbon Filter Care & Cleaning

This video explains how to maintain Purewell carbon filters, especially when the filter becomes dirty or water flow starts to slow down during use.

Useful when filters become dirty Helps maintain smoother water flow Supports daily care and long-term use

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  • 5 stars: 53 (91%)
  • 4 stars: 5 (9%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
M
M.w.
Perfect

These filters work extremely well, even against the plastics in our water systems I never need to worry about drinking fresh clean water and my coffee tastes great 👍

K
K.
Love this filtration system

Love this gravity feed water system. Easy to change filters. Water tastes perfect.

L
L.
Filtered drinking water

I consistently reorder this product. It lasts between 5-6 months. There is a taste to the water but it is pleasant. I have ordered a tester as I would like to see the level of minerals in the drinking water after filtered. I'll update this when I get results.

C
C.
I will buy them again!

Fits our Pure well water filtration system perfectly!

a
a.
Good Filters

Good

R
R.
Tastes great but replaced sooner than others

So far so good. The only downside is it says to replace it after three to six months or 6,000 gallons. I don't believe I use that much drinking water in six months.

A
A.C.
Great customer service with Purewell.

Extremely good costumer service. The filters I purchased didn’t taste right so with just one email to purewell I was sent a new set of filters at no cost.

T
T.M.W.
Great filters

Great filters that function perfectly.

L
L.H.E.
Yes! I LOVE it

Yes! I LOVE it.

T
T.K.B.
Water tastes good!

Water no longer tastes like iodine. Easy to replace.

L
L.R.

Purewell® - K Series - Replacement Black Carbon Water Filter Elements - 2 pcs / 4 pcs / 6 pcs / 8 pcs

D
D.
A good quality filter unit.

This filter does a great job of filtering the water. It comes out of the unit clear and good tasting.

K
K.
First delivery was damaged in transit or delivery

Filters work fine, but between the manufacturers packaging and Amazon not boxing them additionally they are very much too fragile and may not survive normal delivery.

M
M.
Cleaner taste

So far so good. Doesn’t let you know if you need to change filter though.

V
V.
Love Purewell

They work great. I'm afraid to try cheaper ones. Love my Purewell.

M
M.B.
Great!

Works even better and faster than original filter.

S
S.M.
Gives great water!

Ours only last 3 months but the water quality is awesome. I wish it was easier to prime them, don’t forget to do this step.

D
D.H.
So far so good

These filters fit my Berkey and work just as well as the more expensive ones. We shall see if the filter's true value is demonstrated by its durability and effective lipspan.

J
J.A.
The Good & Bad

Filter is custom made for the pure well filtration product and works very well. Description says change 6mos-12months. I recommend 6 months and no longer than 8. You will taste the charcoal in the water if you wait longer than that.

K
K.H.
Super easy to install

Just follow the instructions and these work great.

S
S.
Works great! Better price.

The well water from my tap is wonderful & has no odd taste or smell now. I'm saving $$$ by not buying bottles & it's convenient to use right on my countertop. The unit looks nice as well. Would recommend.

L
L.B.
Black compatible filters

Arrived just as described . Seeming compatible to back berkey

D
D.
Way of the workd

Everyone should own this product. With the scary world we live in. Good filtered clean water is a must worth double the price!!

A
A.C.
Helpful tips worked

I ordered these refills and they didn't work, so I set them aside to research any remedies. After about 2 months, I contacted Pure well for support. They responded right away, provided helpful video to refresh the filters, and voila, the trick worked. Thank you, Pure well. I now have lovely filtered water again.

A
A.C.
Berkey water purifier filter replacement .

THESE FILTERS FIT AS HOPED IN MY BERKEY .
When I installed the 4 filters , I found it helpful to use a thick dish-towel and lay it under the filter I was installing in the top water chamber of the BERKEY. I rotated the top chamber until the filter to install was the bottom of 4 filters to install in the chamber. The dishtowel raises the new enough from the chamber wall to allow me to get the filter bottom threads to align and seat in the bottom of the chamber, making threading the locknut simple.

W
W.
Reliable

Prefect fit and easy and fast installation.

i
i.
Filters fast.

Perfect.

K
K.
Noticeably Better Than Off-Brands

I tried using some off-brand water filters before, but they just don’t compare. These authentic Purewell filters are so much better. The water tastes cleaner, and the filtration process is super fast. I’ll definitely be sticking with this brand from now on. Well worth it!

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