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Portable Hand-Pump Reverse Osmosis Water Filter

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Product Details

Product Overview

01
Product Name Portable Hand-Pump Reverse Osmosis Water Filter

A compact manual RO filtration system designed for camping, hiking, travel, emergency preparedness, and remote water treatment.

Model K8190

A portable pump-driven filtration system that creates the pressure needed to move source water through an RO membrane without electricity.

RO Filtration Precision 0.0001 μm RO Membrane

High-precision reverse osmosis filtration designed to reduce dissolved solids and a broad range of contaminants from source water.

High-Precision RO Filtration
Rated Filter Capacity Up to 10,000 L / 2,641 Gallons

Actual filter life may vary according to source-water quality, dissolved solids, sediment, maintenance, and frequency of use.

Replaceable Filter
Power Requirement No Electricity Required

The integrated hand pump generates filtration pressure without batteries, charging, outlets, or fixed plumbing.

Rated Flow Rate Approximately 200–300 ml/min

Output may vary according to pumping speed, water quality, temperature, and the condition of the filtration components.

Product Dimensions 9.5 × 4.5 × 27 cm

A slim vertical body designed for backpacks, emergency kits, camping equipment, and vehicle preparedness supplies.

Net Weight Approximately 415 g

A portable design that integrates the pressure pump, filter housing, filtration components, and hose connections.

Recommended Water Sources River, Stream, Lake, Well, Rainwater and Tap Water

Select the clearest available water source whenever possible to support steadier output and longer filter life.

Water Separation Pure-Water and Wastewater Outlets

The RO structure separates incoming water into a purified-water stream and a wastewater stream during filtration.

Water Intake Floating External Pre-Filter

The floating intake helps position the inlet away from heavier sediment that may collect at the bottom of a water source.

Best For Camping, Hiking, Travel and Emergencies

Suitable for outdoor recreation, emergency supply kits, remote travel, vehicle preparedness, and temporary off-grid filtration.

Water-source warning: Avoid water affected by fuel, industrial chemicals, pesticides, radioactive materials, or other unknown hazardous contamination. When source-water safety is uncertain, choose a safer water source.

3-Stage Reverse Osmosis Filtration

02

Manual Pressure, Multi-Layer Water Treatment

Movement of the hand pump draws source water through the intake assembly and internal filtration materials. Particle control and carbon filtration help prepare the water before it reaches the high-precision reverse osmosis membrane.

01

PP Cotton Pre-Filtration

Helps intercept sediment, soil, rust particles, suspended material, and other visible debris before water reaches the finer filtration layers.

Sediment Control Particle Capture Pre-Filtration
02

Activated Carbon Filtration

Helps reduce chlorine, unpleasant taste, and odor while helping protect the RO membrane from selected substances in the incoming water.

Chlorine Reduction Taste Improvement Odor Reduction
03

0.0001 μm RO Membrane

The reverse osmosis membrane provides high-precision filtration designed to reduce dissolved solids, salts, selected heavy metals, and other dissolved contaminants.

0.0001 μm RO Membrane Dissolved Solids Reduction
RO separation process: Purified water leaves through the pure-water outlet, while concentrated wastewater leaves through the separate wastewater outlet as part of normal RO membrane operation.

Replacement Filters & Components

03

Maintain Performance with Replaceable Components

The primary filtration cartridge and external intake pre-filter are serviceable filtration components. Replacing worn parts allows the pump body, handle, hoses, connectors, and other reusable components to remain in service.

Main Replacement Filter K8190 Composite RO Filter Cartridge

The internal cartridge combines PP cotton, activated carbon, and a high-precision reverse osmosis membrane to provide the system’s primary filtration performance.

PP Cotton Activated Carbon 0.0001 μm RO Up to 10,000 L
Designed for the K8190 RO Pump Filter
Replace when: the rated capacity is reached, purified-water output remains reduced, taste or odor changes, or the cartridge shows physical damage or abnormal performance.
Water Intake Protection Replacement External Pre-Filter

The external pre-filter connects to the source-water inlet hose and helps intercept larger particles before they enter the pump body and main RO cartridge.

External Intake PP Cotton Sediment Control Replaceable Part
Designed for the K8190 Intake Hose
Clean or replace when: visible debris accumulates, the material becomes damaged, pumping resistance increases, or water intake remains restricted after cleaning.
Replacement reminder: The 10,000-liter capacity is a maximum reference value. Source-water quality, dissolved solids, sediment, storage conditions, and frequency of use can affect actual filter life.

Key Product Indicators

04
RO Filtration Precision 0.0001 μm

High-precision reverse osmosis membrane filtration designed for dissolved-solids reduction.

Rated Filter Capacity Up to 10,000 L / 2,641 Gallons

Actual service life depends on water quality, dissolved solids, sediment, maintenance, and usage frequency.

Purified-Water Flow Rate Approximately 200–300 ml/min

Output may vary according to pumping speed, temperature, membrane condition, and source-water characteristics.

Operating Method Manual Hand-Pump Operation

Repeated handle movement creates the pressure needed to move source water through the RO filtration system.

Filter Materials PP Cotton, Activated Carbon and RO Membrane

Multiple filtration materials work together to control particles, improve taste, and provide RO filtration.

Outlet Configuration Separate Pure-Water and Wastewater Outlets

The dual-outlet structure supports the separation process required during reverse osmosis filtration.

Product Dimensions 9.5 × 4.5 × 27 cm

A compact vertical form designed for outdoor bags, emergency kits, vehicle storage, and equipment cases.

Net Weight Approximately 415 g

Portable enough for outdoor and emergency use while integrating the hand pump and filtration housing.

Care & Use Notes

05

Protect the RO Membrane and Keep the System Ready

Proper cleaning, wastewater discharge, storage, and routine inspection help maintain water flow and protect the internal filtration components. Detailed assembly and operating steps are provided separately in the product user guide.

01
Filter Water Only

Do not use the system for carbonated drinks, sugary liquids, flavored beverages, alcohol, milk, juice, or other non-water liquids.

02
Avoid Detergents and Chemicals

Do not clean the filter cartridge with soap, detergent, bleach, solvents, corrosive cleaners, or abrasive materials.

03
Keep the Wastewater Valve Open

During RO purified-water production, keep the wastewater valve open so concentrated water can discharge normally and help reduce premature membrane blockage.

04
Keep Both Outlets Separate

Do not allow the pure-water hose or clean-water container to contact the wastewater hose, untreated water, or contaminated surfaces.

05
Choose the Clearest Source Available

Heavy sediment and muddy water may increase pumping resistance, reduce output, and shorten the life of the pre-filter and RO cartridge.

06
Check the External Pre-Filter

Inspect the intake pre-filter when pumping becomes harder or water intake slows. Remove visible debris and replace damaged material.

07
Inspect Hoses and Seals

Before outdoor use, check the hoses, connectors, sealing rings, floater, valves, and filter housing for looseness, wear, cracks, or damage.

08
Rinse with Clean Water

After use, rinse the washable exterior parts, hoses, intake pre-filter, and filter housing with clean water without using detergent.

09
Remove Residual Water

Drain water from the hoses, pump body, outlets, and accessible components as thoroughly as possible before packing the system.

10
Dry Before Long-Term Storage

Allow washable components to dry in a clean, ventilated area before placing the filter, hoses, and accessories into the storage bag.

11
Store in a Cool, Dry Place

Keep the system in a dry, cool location away from direct sunlight, high temperatures, corrosive substances, dirt, and unnecessary pressure.

12
Release a Stiff Handle Carefully

If the handle becomes stiff after storage, gently rotate and move it before pumping. Do not strike the handle or force it abruptly.

13
Monitor Purified-Water Output

A persistent reduction in output may indicate a dirty pre-filter, restricted hose, closed wastewater valve, or filtration component requiring maintenance.

14
Replace the Cartridge on Time

Replace the main cartridge when its rated capacity is reached or earlier if output, taste, odor, physical condition, or overall performance changes.

15
Do Not Operate Damaged Parts

Stop using the system when the filter housing, membrane cartridge, valves, hoses, seals, or connectors appear cracked, deformed, or unable to seal correctly.

16
Keep Replacement Parts Clean

Store replacement filters and accessories in their clean packaging until needed, and avoid touching water-contact surfaces with dirty hands.

Important RO operating reminder: Do not routinely close the wastewater valve while producing RO purified water. Restricted wastewater discharge may accelerate buildup inside the membrane and reduce filtration performance.
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 the Filter System Works

Water is added to the upper chamber and moves through the center filter by gravity. After filtration, water collects in the lower chamber and is ready to dispense from the spigot.

1. Fill the Upper Chamber

Add water to the top chamber. The system works without electricity, plumbing, or pressure.

2. Gravity Moves Water Through the Filter

Water naturally flows downward through the center filter element, where the filtration process takes place.

3. Filtered Water Collects Below

After passing through the filter, water collects in the lower chamber for storage and daily use.

4. Dispense When Needed

Open the spigot to pour filtered water for drinking, cooking, or everyday hydration.

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
  • 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 BO Series Carbon Filters selected with this system. The filter option may vary based on your product selection.

  • Selected Filters SF Series Core Filter
  • Package Quantity 1 Box / 1 Filter
  • System Use Install One Filter Only
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 element 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 place and install the filter element properly for daily filtration.

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

NSF Certified for Your Health

Independently tested to meet NSF/ANSI 42 & 372 standards, the highest level of trust in water filtration.

Lead-Free Guarantee (NSF/ANSI 372)
Certified lead-free materials to keep your water worry-free.

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