---
product_id: 66564551
title: "GTS3 3 Gallon RO Water Filtration Expansion Tank, Compact | White Finish, Includes 1/4\" Ball Valve, Durable Steel Construction, Universal Fit for RO Units"
brand: "tankro"
price: "791.98 DT"
currency: TND
in_stock: true
category: "Tank Ro"
url: https://www.desertcart.tn/products/66564551-gts3-3-gallon-ro-water-filtration-expansion-tank-compact-white
store_origin: TN
region: Tunisia
---

# 3 Gallon Capacity 1/4" Quick Connect Valve Durable Steel Build GTS3 3 Gallon RO Water Filtration Expansion Tank, Compact | White Finish, Includes 1/4" Ball Valve, Durable Steel Construction, Universal Fit for RO Units

**Brand:** tankro
**Price:** 791.98 DT
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your hydration game with the ultimate RO expansion tank!

## Quick Answers

- **What is this?** GTS3 3 Gallon RO Water Filtration Expansion Tank, Compact | White Finish, Includes 1/4" Ball Valve, Durable Steel Construction, Universal Fit for RO Units by tankro
- **How much does it cost?** 791.98 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/66564551-gts3-3-gallon-ro-water-filtration-expansion-tank-compact-white)

## Best For

- tankro enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Crafted from deep-drawn steel with precision welding for unmatched durability and a 1-year warranty.
- • **Effortless Setup:** Includes a 1/4" ball valve with quick-connect design for fast, hassle-free installation.
- • **Compact Powerhouse:** Fits seamlessly under most sinks (14x9x9 inches) for sleek, space-saving installation.
- • **Pure Water On-Demand:** Stores up to 3 gallons of contaminant-free water, ensuring fresh hydration anytime.
- • **Universal Compatibility:** Engineered to fit all standard RO systems, making upgrades and replacements a breeze.

## Overview

The GTS3 3 Gallon RO Water Filtration Expansion Tank combines compact design with robust steel construction, delivering reliable, on-demand purified water storage. Featuring a universal fit and easy-install 1/4" ball valve, it’s the perfect upgrade for any reverse osmosis system seeking durability and convenience.

## Description

TankRO GTS3 3 Gallon RO Water Filtration Expansion Tank, Compact | White Finish, Includes 1/4" Ball Valve, Durable Steel Construction, Universal Fit for RO Units - desertcart.com

## Features

- Reverse Osmosis Tank: Made from 100% food grade materials, this RO water tank stores and keeps your water free from any impurities and harsh chemicals. The perfect addition to any RO water system.
- Easy to Install Water Tank: RO tank replacements include free tank ball valve for easy set-up and replacement with 1⁄4” quick connect design.
- Durable Water Storage Tank: This RO water tank is rigorously tested for quality and durability and includes a 1-year warranty.
- High Quality Water Tank: This water storage tank is made from durable deep-drawn steel domes with precision welding to ensure long lasting value for your RO water system.
- Water Tank Dimensions: This compact water tank is designed (14 x 9 x 9) to fit under most kitchen sinks. Stores up to 2.2 gallons of water for on-demand filtered drinking water.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B079YZ8THK |
| Best Sellers Rank | #85,835 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #160 in Under-Sink & Countertop Filtration |
| Brand Name | tankRo |
| Capacity | 3 gallons |
| Container Type | Tank |
| Customer Reviews | 4.5 4.5 out of 5 stars (1,398) |
| Included Components | Tank |
| Installation Type | Under Sink |
| Item Dimensions L x W x H | 9"L x 9"W x 14"H |
| Item Weight | 6 pounds |
| LowerTemperature Range | 33 °F |
| Manufacturer | tankRo |
| Material Type | BPA Free |
| Maximum Flow Rate | 0.8 gpm |
| Model Name | GTS3 |
| Model Number | GTS3 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Operating Pressure Range | 5-100 psi |
| Other Special Features of the Product | Durable |
| Part Number | GTS3 |
| Power Source | Adapter |
| Purification Method | Reverse Osmosis |
| Supported Water TDS Level Maximum (PPM) | 2000 |
| UPC | 653590999287 |
| Unit Count | 1 Count |
| Upper Temperature Rating | 100 °F |

## Product Details

- **Brand:** tankRo
- **Capacity:** 3 gallons
- **Included Components:** Tank
- **Installation Type:** Under Sink
- **Material:** BPA Free
- **Package Information:** Tank
- **Power Source:** Adapter
- **Product Dimensions:** 9"L x 9"W x 14"H
- **Purification Method:** Reverse Osmosis
- **Special Feature:** Durable

## Images

![GTS3 3 Gallon RO Water Filtration Expansion Tank, Compact | White Finish, Includes 1/4" Ball Valve, Durable Steel Construction, Universal Fit for RO Units - Image 1](https://m.media-amazon.com/images/I/61ttQ1+cTAL.jpg)
![GTS3 3 Gallon RO Water Filtration Expansion Tank, Compact | White Finish, Includes 1/4" Ball Valve, Durable Steel Construction, Universal Fit for RO Units - Image 2](https://m.media-amazon.com/images/I/71LIyZ5gmJL.jpg)
![GTS3 3 Gallon RO Water Filtration Expansion Tank, Compact | White Finish, Includes 1/4" Ball Valve, Durable Steel Construction, Universal Fit for RO Units - Image 3](https://m.media-amazon.com/images/I/71XdNDBD3FL.jpg)
![GTS3 3 Gallon RO Water Filtration Expansion Tank, Compact | White Finish, Includes 1/4" Ball Valve, Durable Steel Construction, Universal Fit for RO Units - Image 4](https://m.media-amazon.com/images/I/81N73+2l0yL.jpg)
![GTS3 3 Gallon RO Water Filtration Expansion Tank, Compact | White Finish, Includes 1/4" Ball Valve, Durable Steel Construction, Universal Fit for RO Units - Image 5](https://m.media-amazon.com/images/I/71u-OK9cGOL.jpg)

## Available Options

This product comes in different **Size** options.

## Frequently Bought Together

- TankRO - RO Water Filtration System Expansion Tank - 3 Gallon Compact Reverse Osmosis Water Storage Pressure Tank With Free 1/4" Ball Valve
- Metpure Quick Connect Tank Ball Valve with Gasket For Water Purification Systems And Reverse Osmosis System Pressurized Water Storage Tank (1/4" Female NPT x 3/8" OD Quick Connect)
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**Shop now:** [https://www.desertcart.tn/products/66564551-gts3-3-gallon-ro-water-filtration-expansion-tank-compact-white](https://www.desertcart.tn/products/66564551-gts3-3-gallon-ro-water-filtration-expansion-tank-compact-white)

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-08-19*