---
product_id: 66564595
title: "– RO Water Filtration System Expansion Tank – 11 Gallon Water Tank – Large Reverse Osmosis Water Storage Pressure Tank"
brand: "tankro"
price: "$733.22"
currency: USD
in_stock: false
reviews_count: 13
category: "Tank Ro"
url: https://www.desertcart.us/products/66564595-ro-water-filtration-system-expansion-tank-11-gallon-water-tank
store_origin: US
region: United States of America
---

# 11 Gallon Capacity Easy Installation Durable Steel Build – RO Water Filtration System Expansion Tank – 11 Gallon Water Tank – Large Reverse Osmosis Water Storage Pressure Tank

**Brand:** tankro
**Price:** $733.22
**Availability:** ❌ Out of Stock

## Summary

> 💧 Elevate your hydration game with tankRo’s powerhouse RO expansion tank!

## Quick Answers

- **What is this?** – RO Water Filtration System Expansion Tank – 11 Gallon Water Tank – Large Reverse Osmosis Water Storage Pressure Tank by tankro
- **How much does it cost?** $733.22 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/66564595-ro-water-filtration-system-expansion-tank-11-gallon-water-tank)

## 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:** Deep-drawn steel and epoxy coating ensure your tank resists corrosion and outdoor wear.
- • **Effortless Setup:** Plug-and-play design means no plumber needed—get filtered water fast.
- • **Food-Grade Safety:** 100% food-grade materials keep your water pure and chemical-free.
- • **Massive 11-Gallon Storage:** Stay hydrated with on-demand purified water, no waiting.
- • **Trusted Quality & Warranty:** Rigorously tested with a 1-year warranty for peace of mind.

## Overview

The tankRo RO Water Filtration System Expansion Tank offers a robust 11-gallon capacity with a durable, food-grade steel construction. Designed for easy under-sink installation, it ensures a steady supply of purified water on demand. Its corrosion-resistant epoxy coating and precision welding guarantee long-lasting performance, backed by a 1-year warranty. Ideal for professionals seeking reliable, high-quality water storage that seamlessly integrates with any reverse osmosis system.

## Description

tankRO – RO Water Filtration System Expansion Tank – 11 Gallon Water Tank – Large Reverse Osmosis Water Storage Pressure Tank - desertcart.com

Review: Exactly What I Needed - Works Great - Easy to install, good quality and works like a charm. Much cheaper than getting a replacement through Kinetico.
Review: R/O tank - Tank was smaller than I hoped for but it serves the purpose. My old tank was larger. Just happy to have my R/O up and running! Love it!

## 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 easy set-up
- 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. Coated with epoxy primer and polyurethane to even withstand the outdoors.
- Water Tank Dimensions: This large capacity water tank is 23 x 15 x 15 stores up to 8 gallons of water for on-demand filtered drinking water.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B079YZPDN1 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #57,239 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #122 in Under-Sink & Countertop Filtration |
| Brand | tankRo |
| Color | Blue |
| Customer Reviews | 4.5 4.5 out of 5 stars (1,357) |
| Date First Available | February 21, 2018 |
| Installation Type | Under Sink |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 22.2 pounds |
| Item model number | GTS11 |
| Manufacturer | tankRo |
| Model Name | TankRO |
| Package Information | Bottle |
| Part Number | GTS11 |
| Product Dimensions | 24.5"L x 16"W x 16"H |
| Size | 11 Gallons |
| Special Feature | Durable |
| Special Features | Durable |
| Supported Water TDS Level Maximum (PPM) | 500 |
| UPC | 653590999300 |
| Upper Temperature Rating | 100 Degrees Fahrenheit |

## Product Details

- **Brand:** tankRo
- **Capacity:** 11 Gallons
- **Included Components:** RO Tank
- **Installation Type:** Under Sink
- **Item Weight:** 22.2 Pounds
- **Material:** Alloy Steel, Polypropylene
- **Package Information:** Bottle
- **Product Dimensions:** 24.5"L x 16"W x 16"H
- **Purification Method:** Reverse Osmosis
- **Special Feature:** Durable

## Images

![– RO Water Filtration System Expansion Tank – 11 Gallon Water Tank – Large Reverse Osmosis Water Storage Pressure Tank - Image 1](https://m.media-amazon.com/images/I/51C5XjcqkES.jpg)

## Customer Reviews

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

Easy to install, good quality and works like a charm. Much cheaper than getting a replacement through Kinetico.

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

Tank was smaller than I hoped for but it serves the purpose. My old tank was larger. Just happy to have my R/O up and running! Love it!

### ⭐⭐⭐⭐⭐ Ditch that small tank for this - you will be glad you did. SO. MUCH. WATER!
*by B***Y on September 11, 2025*

Original RO system came with a paltry 3 gallon tank, of which only 1.8 gallons was for water storage. I didn't know how awful that was until the membrane in that tank died. Determined to ensure we always have enough RO and plenty of pressure in the line, I doubled the desired capacity, and then DOUBLED it AGAIN. So, the 8 desired gallons of liquid required a 10-12 gallon tank. The tank came with ZERO installation hardware. I stole the old valve from the old tank which worked out just fine. By morning, we had 8 gallons of RO water flowing. I strongly recommend this tank!

## Frequently Bought Together

- tankRO – RO Water Filtration System Expansion Tank – 11 Gallon Water Tank – Large Reverse Osmosis Water Storage Pressure Tank
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- Aquatec 6800 Booster Pump Kit for up to 100 GPD Home RO Reverse Osmosis Water Filter System Standard or Manifold, Includes Pump, Pressure Switch PSW-240, Transformer, 6840-2J03-B224 B221 Made in USA

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-24*