---
product_id: 475448832
title: "tankRo 3 Gallon RO Expansion Tank – Compact Reverse Osmosis Water Storage Pressure Tank with Free Tank Ball Valve"
brand: "tankro"
price: "R$2650"
currency: BRL
in_stock: true
reviews_count: 5
category: "Tank Ro"
url: https://www.desertcart.com.br/products/475448832-tankro-3-gallon-ro-expansion-tank-compact-reverse-osmosis-water
store_origin: BR
region: Brazil
---

# 3 Gallon capacity for ample water storage Includes free 1/4" quick connect tank ball valve Heavy-duty steel domes & precision welded seams tankRo 3 Gallon RO Expansion Tank – Compact Reverse Osmosis Water Storage Pressure Tank with Free Tank Ball Valve

**Brand:** tankro
**Price:** R$2650
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your hydration game with tankRo’s compact, durable RO expansion tank!

## Quick Answers

- **What is this?** tankRo 3 Gallon RO Expansion Tank – Compact Reverse Osmosis Water Storage Pressure Tank with Free Tank Ball Valve by tankro
- **How much does it cost?** R$2650 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/475448832-tankro-3-gallon-ro-expansion-tank-compact-reverse-osmosis-water)

## 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:** Commercial-grade steel construction with epoxy primer and polyurethane finish resists corrosion and outdoor elements.
- • **Compact Powerhouse:** Slim 14x9x9 inch design fits seamlessly under most kitchen sinks without sacrificing capacity.
- • **Pure & Safe Hydration:** 100% food-grade, BPA-free materials with post-cured diaphragm ensure contaminant-free, tasteless water.
- • **Plug & Play Convenience:** Free tank ball valve with quick-connect setup makes installation effortless and hassle-free.
- • **Trusted Quality Assurance:** Multi-stage testing plus a 1-year warranty guarantees reliable performance and peace of mind.

## Overview

The tankRo 3 Gallon RO Expansion Tank is a compact, high-quality water storage solution designed for reverse osmosis systems. Made from 100% food-grade, BPA-free materials with a post-cured diaphragm, it ensures pure, contaminant-free water. Its heavy-duty steel construction with precision welding and corrosion-resistant coating guarantees durability. The tank includes a free 1/4" quick connect ball valve for easy installation and fits under most kitchen sinks with its space-saving dimensions. Backed by multi-stage quality testing and a 1-year warranty, it delivers reliable, safe water storage for professional and home use.

## Description

The tankRO 3 Gallon Water Storage Tank gives tasteless, odorless, and contaminant free water. Get a quality tank you can rely on today. The post cured diaphragm means sterile water distribution to keep your water safe. The water reservoir can hold up to 2.2 gallons of water at once, with the rest of the storage area being occupied by the pre pressurized air bladder, which helps you draw water from the tank. This tank comes with a free Tank Ball Valve and a free Tank Stand. Designed to fit under sinks this water holding tank will fit most kitchen cabinets, it is made to work when lying on its side or upright. The tank is durability tested at several stages and is backed with a one year warranty. Maximum working pressure of the tank is 100 PSI. The tank is also designed to survive the outdoor elements with a two part epoxy primer and polyurethane paint finish. This is a fully functional pressure tank for water wells. The water accumulator chamber of the tank includes the highest grade of polypropylene, virgin polypropylene, meaning you have the most durable and smooth inside lining. This tank is built to last with heavy duty commercial construction with durable deep drawn steel domes and precision welded seams. Improve your water today.

Review: NOT imperial & credit only achieved by contacting desertcart for help.
Review: Exactly What I Needed - Works Great

## Features

- KEEP YOUR WATER HEALTHY - This tank is made from 100% food grade materials with a post cured diaphragm to ensure there are no chemicals in your water
- FREE TANK VALVE - Free tank valve included, designed for 1/4" quick connect setup
- CERTIFIED QUALITY - We include a 1 year warranty and every tank is tested at multiple stages
- COUNT ON YOUR TANK - Heavy duty commercial construction with durable deep drawn steel domes and precision welded seams
- WHERE YOU NEED IT - Compact 14 x 9 x 9 size fits under most kitchen sinks

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B079YZ8THK |
| Brand | tankRo |
| Brand Name | tankRo |
| Capacity | 3 Gallons |
| Container Type | Can |
| Country Of Origin | USA |
| Customer Reviews | 4.6 out of 5 stars 491 Reviews |
| Included Components | Tank |
| Installation Type | Under Sink |
| Item Dimensions L x W x H | 22.9L x 22.9W x 35.6H Centimeters |
| Item Height | 14 Inches |
| Manufacturer | tankRo |
| Material | BPA Free |
| Material Type | BPA Free |
| Model Name | GTS3 |
| Model Number | GTS3 |
| Other Special Features of the Product | RO |
| Power Source Type | Corded Electric |
| Product Dimensions | 22.9L x 22.9W x 35.6H Centimeters |
| Purification Method | Reverse Osmosis |
| Special Feature | RO |
| Supported Water TDS Level Maximum (PPM) | 2000 |
| UPC | 653590999287 |
| Upper Temperature Rating | 100 Degrees Fahrenheit |
| Whats in the box? | Tank |

## Product Details

- **Brand:** tankRo
- **Special Feature:** RO
- **Product Dimensions:** 22.9L x 22.9W x 35.6H Centimeters
- **Material:** BPA Free
- **Capacity:** 3 Gallons

## Images

![tankRo 3 Gallon RO Expansion Tank – Compact Reverse Osmosis Water Storage Pressure Tank with Free Tank Ball Valve - Image 1](https://m.media-amazon.com/images/I/61IMRV4n-wL.jpg)
![tankRo 3 Gallon RO Expansion Tank – Compact Reverse Osmosis Water Storage Pressure Tank with Free Tank Ball Valve - Image 2](https://m.media-amazon.com/images/I/61Z+zOn5S-L.jpg)
![tankRo 3 Gallon RO Expansion Tank – Compact Reverse Osmosis Water Storage Pressure Tank with Free Tank Ball Valve - Image 3](https://m.media-amazon.com/images/I/61vCanYEe6L.jpg)
![tankRo 3 Gallon RO Expansion Tank – Compact Reverse Osmosis Water Storage Pressure Tank with Free Tank Ball Valve - Image 4](https://m.media-amazon.com/images/I/71+N8-20CHS.jpg)
![tankRo 3 Gallon RO Expansion Tank – Compact Reverse Osmosis Water Storage Pressure Tank with Free Tank Ball Valve - Image 5](https://m.media-amazon.com/images/I/71MZMlv73jS.jpg)

## Customer Reviews

### ⭐⭐⭐ NOT imperial & credit only achieved by contacting Amazon for help.
*by M***P on 13 November 2025*



### ⭐⭐⭐⭐⭐ Exactly What I Needed - Works Great
*by J***I on 26 November 2025*



### ⭐⭐⭐⭐⭐ R/O tank
*by T***T on 13 January 2026*



## 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
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**Shop now:** [https://www.desertcart.com.br/products/475448832-tankro-3-gallon-ro-expansion-tank-compact-reverse-osmosis-water](https://www.desertcart.com.br/products/475448832-tankro-3-gallon-ro-expansion-tank-compact-reverse-osmosis-water)

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*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-01-29*