---
product_id: 59886270
title: "Express Water Filter Upgrade Kit for Reverse Osmosis and Under Sink Water Filtration System – Add a New Filtration Stage to Your System – Includes Adapters for ¼” Threaded and Quick Connect Filters"
brand: "express water"
price: "€ 66.31"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.es/products/59886270-express-water-filter-upgrade-kit-for-reverse-osmosis-and-under
store_origin: ES
region: Spain
---

# Hassle-free, flexible installation clips 100% food-grade BPA-free tubing Universal adapters for quick connect & ¼” threaded filters Express Water Filter Upgrade Kit for Reverse Osmosis and Under Sink Water Filtration System – Add a New Filtration Stage to Your System – Includes Adapters for ¼” Threaded and Quick Connect Filters

**Brand:** express water
**Price:** € 66.31
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your water game—because your health deserves the upgrade!

## Quick Answers

- **What is this?** Express Water Filter Upgrade Kit for Reverse Osmosis and Under Sink Water Filtration System – Add a New Filtration Stage to Your System – Includes Adapters for ¼” Threaded and Quick Connect Filters by express water
- **How much does it cost?** € 66.31 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/59886270-express-water-filter-upgrade-kit-for-reverse-osmosis-and-under)

## Best For

- express water enthusiasts

## Why This Product

- Trusted express water brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Durable & Reusable:** Built to last with high-quality materials for long-term peace of mind
- • **Quick & Easy Setup:** Flexible clips and extra tubing for a no-fuss installation experience
- • **Pure Hydration Upgrade:** Add alkaline, deionization, or UV sterilization effortlessly
- • **Premium Safety Standard:** NSF-certified polyethylene tubing ensures clean, odorless water
- • **Universal Compatibility:** Fits all standard reverse osmosis and under-sink systems seamlessly

## Overview

The Express Water Filter Upgrade Kit enhances your reverse osmosis or under-sink filtration system by adding an extra filtration stage. Featuring 100% food-grade BPA-free polyethylene tubing and universal adapters for both ¼” threaded and quick connect filters, it ensures clean, odorless, and tasteless water. NSF-certified and designed for easy installation with flexible clips and extra tubing, this durable kit supports adding alkaline, deionization, or UV sterilization to your water purifier.

## Description

Full description not available

## Features

- Simply Pure - Keep your water clean, odorless, and tasteless with 100% food grade BPA free polyethylene tubing
- The Highest Quality - Durable reusable pieces for a lasting installation
- Easy Installation - Easy flex filter clips and extra tubing for quick hassle free setup
- For Any Application - Use with any standard Reverse Osmosis Systems
- Upgrade Your Water - Exactly what you need to add Alkaline, Deionization, or an Ultraviolet Sterilizer to your Purifier

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material | Polyethylene (PE) |
| Item Weight | 0.11 Kilograms |
| External Testing Certification | NSF |
| Product Benefits | Keep your water clean, odorless, and tasteless with 100% food grade BPA free polyethylene tubing |
| Brand | EXPRESS WATER |
| Set Name | Filter Upgrade Kit |
| UPC | 653590999096 |
| Global Trade Identification Number | 00653590999096 |
| Unit Count | 1.0 Count |
| Number of Items | 1 |
| Manufacturer | Express Water |
| Part Number | PRTUPKIT14 |
| Item Weight | 3.77 ounces |
| Item model number | PRTUPKIT14 |
| Is Discontinued By Manufacturer | No |
| Size | Universal |
| Color | White |
| Item Package Quantity | 1 |
| Included Components | Filter Upgrade Kit for Reverse Osmosis |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Material:** Polyethylene (PE)
- **Item Weight:** 0.11 Kilograms
- **External Testing Certification:** NSF
- **Product Benefits:** Keep your water clean, odorless, and tasteless with 100% food grade BPA free polyethylene tubing
- **Brand:** EXPRESS WATER

## Images

![Express Water Filter Upgrade Kit for Reverse Osmosis and Under Sink Water Filtration System – Add a New Filtration Stage to Your System – Includes Adapters for ¼” Threaded and Quick Connect Filters - Image 1](https://m.media-amazon.com/images/I/61wB9wf8GdL.jpg)
![Express Water Filter Upgrade Kit for Reverse Osmosis and Under Sink Water Filtration System – Add a New Filtration Stage to Your System – Includes Adapters for ¼” Threaded and Quick Connect Filters - Image 2](https://m.media-amazon.com/images/I/71+DDhfXeYL.jpg)
![Express Water Filter Upgrade Kit for Reverse Osmosis and Under Sink Water Filtration System – Add a New Filtration Stage to Your System – Includes Adapters for ¼” Threaded and Quick Connect Filters - Image 3](https://m.media-amazon.com/images/I/71jGIeSOU6L.jpg)
![Express Water Filter Upgrade Kit for Reverse Osmosis and Under Sink Water Filtration System – Add a New Filtration Stage to Your System – Includes Adapters for ¼” Threaded and Quick Connect Filters - Image 4](https://m.media-amazon.com/images/I/61Vwv3gS+WL.jpg)
![Express Water Filter Upgrade Kit for Reverse Osmosis and Under Sink Water Filtration System – Add a New Filtration Stage to Your System – Includes Adapters for ¼” Threaded and Quick Connect Filters - Image 5](https://m.media-amazon.com/images/I/71S2XZ7D4xL.jpg)

## Questions & Answers

**Q: Can i add 3 express filters to my counter top express model, the uv, acb, and alkaline...is this possible and how many of these kits would i need?**
A: 1 kit to add 2 filters.  So, for 3 filters you need 2 kits. But, I'm not sure this fits the countertop model. Filters look the same, but I don't have them.

**Q: What fittings are needed to install just the "ION" filter under a sink for the cold water?**
A: I don't know what ion filter you wish to install. But, this set is for adding any filter of your choice to basically any under sink reverse osmosis filter assembly. So, it might work if the filter of your choice has 1/4" tubing connections. Your filter of choice must match the form factor of the other reverse osmosis filters so that the clips hold the filter in place.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Just what I needed
*by A***R on August 5, 2024*

Worked great just like an OEM part.

### ⭐⭐⭐⭐⭐ Filter add-on
*by T***E on September 29, 2018*

If you want to add another filter stage or or an alkalinity booster, this is the kit. Fits most osmosis filter systems if the top filter is accessible. Other fittings and tubing make it an easy process that can up repeated every 6 months or year when replacement becomes necessary. Takes up minimal space under the sink by going vertically. Great product.

### ⭐⭐⭐ Works but annoying they don't give you more
*by S***N on August 10, 2022*

This gets the job done but they should give you more parts for the price your paying. 5' of tubing is just barely enough tubing, and I'm always losing those blue clips. Especially when you can get 100' of the same tubing from other sellers a lot cheaper. Disappointing that they are so cheap with what they include, it would only cost them a tiny bit more to include some more and would make the install a lot less stressful. Another pair of large filter clips would be nice too.

## Frequently Bought Together

- EXPRESS WATER PRTUPKIT14 Filter Upgrade Kit for Reverse Osmosis, Universal, White
- Express Water – Alkaline Water Filter Replacement – Mineral, Antioxidant, pH+ – 10 Inch – Under Sink and Reverse Osmosis System
- Express Water – UV Water Filter Replacement – UV Water System – 12 Inch UV Light Housing with 10 inch Bulb – Under Sink and Reverse Osmosis System

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*Product available on Desertcart Spain*
*Store origin: ES*
*Last updated: 2026-03-01*