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K Series Countertop Gravity Water Filter System 2.25 Gallon

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Product Details

System Overview

01
Product Series K Series Gravity Water Filter System

Countertop gravity water filtration for daily use.

System Capacity 2.25 Gal

Recommended for 3–5 people.

Item Number K8776A

2.25 Gal system version.

Main Material 304 Stainless Steel

Durable, easy to clean, and designed for long-term countertop use.

Water Level Window Built-In Viewing Window

Helps you check the water level more easily.

System Size Φ22 × 66 cm

Measured with the stand installed.

Water Temperature 40°F–100°F / 4–37°C

Use cold or room-temperature water only.

Water Sources Tap / City / Well / Rain / Stream / River

Source water quality may affect filter life and flow rate.

Note: For best results, use clear source water. Outdoor or untreated water may shorten filter life depending on water quality.

Choose Your K Series Carbon Filters

02

Filter Selection Required

This 2.25 Gal K Series system requires K Series Carbon Filters. Select one filter option based on your water needs. Each filter selection includes 1 Box / 2 Filters.

3-Stage Advanced

Item No. K8012

Best for everyday filtration with activated carbon, silver ion, and hollow fiber UF membrane.

0.01 μm Pore Size Removes Bacteria Reduces Chlorine

4-Stage Reduce Fluoride

Item No. K8014

Adds fluoride reduction material to the core filtration layers.

0.01 μm Pore Size Removes Bacteria Reduces Chlorine Reduces Fluoride

4-Stage Raise pH Level

Item No. K8015

Adds alkaline material to the core filtration layers.

0.01 μm Pore Size Removes Bacteria Reduces Chlorine Raises pH Level
Filter quantity: For the 2.25 Gal system, use 1 Box / 2 Filters. Install both filters together for normal use.

Key Filter Indicators

03
Filter Life Up to 6,000 Gallons per Box

Actual life may vary by source water quality and usage frequency.

Flow Rate Up to 4 Gallons per Hour

Based on 2 filters installed. Flow may slow as filters collect impurities.

Filter Quantity 1 Box / 2 Filters

Use both filters together for normal 2.25 Gal system operation.

Pore Size 0.01 μm

Designed with hollow fiber UF membrane filtration.

Filter Type Core Filter

Designed for gravity water filter systems.

Filtration Stages 3-Stage / 4-Stage

Choose from everyday, fluoride reduction, or alkaline filter options.

TDS Does Not Reduce TDS

These filters are not designed to lower total dissolved solids.

Compatibility K Series Systems

Use with compatible Purewell K Series gravity water filter systems.

Filter Use Notes

04
Flush Before First Use

Flush the filters before first use and discard the first batch of filtered water.

Replace On Time

Replace filters when the rated capacity is reached, taste changes, or water flow becomes slower.

Use the Right Water Temperature

Use only cold or room-temperature water within the recommended range.

Source Water Matters

Outdoor, well, or untreated water may shorten filter life depending on water quality.

User Guide
Installation Guide

How to Set Up Your Countertop Gravity Water Filter System

Follow these simple steps to assemble the system, install the core filters, flush before first use, and prepare it for daily use.

Prepare and Clean the Parts

Before assembly, check the main parts and clean the system components.

  • 1
    Wash Your Hands Handle the system with clean hands before setup.
  • 2
    Check Included Parts Make sure the chambers, lid, spigot, stand, and core filters are ready.
  • 3
    Clean Before Assembly Rinse the chambers and accessories before first use.
Note: Use cold or room-temperature water only. Do not use hot water.

Assemble the Lid Knob

Attach the lid knob to the lid and secure it with the included hardware.

  • 1
    Place the Lid Knob Insert the lid knob into the center hole of the lid.
  • 2
    Add Washer and Gasket Place the washer and gasket in the correct position.
  • 3
    Tighten the Screw Fasten the knob until it feels stable.
Tip: Do not overtighten. The lid knob should feel secure but not forced.

Install the Basic Spigot

Install the basic spigot into the lower chamber before stacking the system.

  • 1
    Insert the Spigot Place the spigot through the lower chamber hole with the gasket and washer.
  • 2
    Add the Inside Parts Place the remaining washer and gasket from the inside of the chamber.
  • 3
    Tighten the Hex Nut Use the wrench to secure the spigot vertically.
Before filling: Make sure the spigot is closed to help prevent leaking.

Install the Core Filters

Use the required number of core filters for your system model.

  • 1
    Insert the Core Filters Place the core filters through the holes in the upper chamber.
  • 2
    Secure the Filters Use the filter washer and wing nut to hold each core filter in place.
  • 3
    Check Stability Make sure each core filter is firmly installed before adding water.
Note: This guide uses “core filters” only. Filter type and quantity may vary by system option.

Stack the Chambers and Stand

Set the system together in the correct order before flushing.

  • 1
    Attach the Anti-slip Mat Place the anti-slip mat on the bottom of the lower chamber.
  • 2
    Place the Lower Chamber on the Stand Set the lower chamber securely on the stand.
  • 3
    Add the Upper Chamber and Lid Place the upper chamber into the lower chamber, then cover it with the lid.
Stability check: Make sure the system sits flat and stable before filling water.

Flush Before First Use

Flush the system before drinking water from it for the first time.

  • 1
    Fill the Upper Chamber Add water and let it move through the core filters.
  • 2
    Discard the First Batch Pour out the first filtered water from the lower chamber.
  • 3
    Repeat 2–3 Times After flushing, the system is ready for regular use.
Tip: Fill the upper chamber as much as possible at the beginning to support gravity-fed filtration.
System Type Countertop Gravity System
Filter Reference Core Filters
First Use Flush 2–3 Times
Water Temperature 40°F–100°F / 4–37°C
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.
List

System Package

Main parts included for the countertop gravity water filter system.

  • Upper Chamber× 1
  • Lower Chamber× 1
  • Lid× 1
  • Lid Knob× 1
  • Knob Washer× 1
  • Knob Gasket× 1
  • Knob Screw× 1
  • Anti-slip Mat× 1
  • Stand× 1
  • User Manual× 1

Basic Spigot Parts

Parts used to install the basic stainless steel spigot.

  • Basic Spigot× 1
  • Spigot Gasket× 2
  • Beveled Washer× 2
  • Spigot Hex Nut× 1
  • Wrench× 1
  • Screwdriver× 1
  • Plastic Spigot× 1
  • Silicone Plug× 1

Selected Filter Package

Your package includes the K Series Carbon Filters selected with this system. The filter option may vary based on your product selection.

  • Selected Filters K Series Carbon Filters
  • Package Quantity 1 Box / 2 Filters
  • System Use Install Both Filters Together
Note: The final filter type is based on the filter option selected before checkout.
Video

2.25 Gallon Water Filter System Installation Video

Watch this step-by-step guide to set up your Purewell 2.25 gallon water filter system and install the filter elements in the correct position before first use.

Installation Guide

2.25 Gallon System Setup & Filter Placement

This video shows how to assemble the Purewell 2.25 gallon water filter system, including how to arrange and install the filter elements properly for daily filtration.

Recommended before first use Helps confirm correct filter placement Covers basic system setup and assembly Useful when installing or replacing filter elements

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  • 5 stars: 3 (75%)
  • 4 stars: 1 (25%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
A
A.
Amazing!

With this bundle, I don't need to ask Purewell team when to change the filters any more. This pack is for a whole year. Nice!

C
C.S.
Drinking better water….

I love that I don’t have to spend money on bottled water and the water is good. I have 4 stars because the water does not filter completely out of the top tank, therefore I feel it does get filtered. So I add that water to filter again when I add more tap water to be filtered. I also thought I was supposed to have gotten 4 extra filters due to the system I ordered had a year supply of filters and Purewell stated to make sure to get fresh clean water change filter every 3 months and I only received 2 extra filters besides the 2 that came with the system. I thought that was a little misleading, nevertheless, the water is good.

M
M.K.
Recommend!

Is this the new launched option? Cheaper than others. Filtered water taste fresh.

R
R.
Cost-effective Option

I compared all the options, and fount this one is cheaper than buy water filter system and replacement filters separately. Recommend this! 👍🏻

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