---
product_id: 12636522
title: "TankRo RO132-TNK Reverse Osmosis Water Storage Tank, 4 Gallon, White"
brand: "express water"
price: "¥44136"
currency: JPY
in_stock: true
url: https://www.desertcart.jp/products/12636522-tankro-ro132-tnk-reverse-osmosis-water-storage-tank-4-gallon
store_origin: JP
region: Japan
---

# 4-gallon capacity for on-demand pure water Compact 15x12x12 inch fits under most sinks Durable deep-drawn steel with precision welding TankRo RO132-TNK Reverse Osmosis Water Storage Tank, 4 Gallon, White

**Brand:** express water
**Price:** ¥44136
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your hydration game with pure, pressure-perfect water storage!

## Quick Answers

- **What is this?** TankRo RO132-TNK Reverse Osmosis Water Storage Tank, 4 Gallon, White by express water
- **How much does it cost?** ¥44136 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/12636522-tankro-ro132-tnk-reverse-osmosis-water-storage-tank-4-gallon)

## 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

- • **Built to Endure:** Heavy-duty steel domes and epoxy finish ensure long-lasting, corrosion-resistant performance.
- • **Pressure Perfected:** Pre-pressurized air bladder and 100 PSI max pressure deliver smooth, reliable water flow.
- • **Space-Savvy Design:** Compact footprint fits seamlessly under most kitchen sinks without cramping your style.
- • **Certified Peace of Mind:** Backed by a 1-year warranty and tested for everyday durability—because quality matters.
- • **Pure Hydration, Always Ready:** Stores 3.2 gallons of tasteless, odorless RO water for instant refreshment.

## Overview

The TankRo RO132-TNK is a 4-gallon reverse osmosis water storage tank designed for under-sink installation. Crafted from durable deep-drawn steel with precision welding and a corrosion-resistant epoxy finish, it ensures long-lasting, impurity-free water storage. Its compact 15x12x12 inch size fits most kitchen cabinets, delivering up to 3.2 gallons of filtered water on demand with a reliable pre-pressurized air bladder system supporting up to 100 PSI. Tested for durability and backed by a 1-year warranty, this tank is a trusted upgrade for any RO water system.

## Description

The tankRO 4 Gallon Water Storage Tank gives tasteless, odorless, and impurity free water. Get a quality tank you can rely on today for your RO system. The post cured diaphragm means sterile water distribution to keep your water safe. The water reservoir tank can hold up to 3.2 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. Designed to fit under sinks this water tank will fit most kitchen cabinets, it is made to work when lying on its side or upright. The expansion 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 water filter tank is also designed to survive the outdoor elements with a two-part epoxy primer and polyurethane paint finish. This is a fully functional water pressure tank for water wells. The water accumulator chamber of the RO water tank includes the highest grade of polypropylene, virgin polypropylene, meaning you have the most durable and smooth inside lining. This water storage tank is built to last with heavy duty commercial construction with durable deep drawn steel domes and precision welded seams. Improve your water today.

## Features

- Reverse Osmosis Tank: Keeps your water free from any impurities and harsh chemicals. The perfect addition to any RO water system.
- 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 (15 x 12 x 12) to fit under most kitchen sinks. Stores up to 3.2 gallons of water for on-demand filtered drinking water.
- Built for Everyday Durabilty: Designed and tested to ensure reliable performance and long-lasting use

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Asin | B00Q798N8E |
| Best Sellers Rank | #15,606 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #33 in Under-Sink & Countertop Filtration |
| Brand Name | EXPRESS WATER |
| Capacity | 4 gallons |
| Container Type | Tank |
| Customer Reviews | 4.6 4.6 out of 5 stars (2,234) 4.6 out of 5 stars |
| Global Trade Identification Number | 00641990965834 |
| Included Components | 4-Gallon Water Storage Tank |
| Installation Type | Under Sink |
| Item Dimensions L X W X H | 15"L x 12"W x 12"H |
| Item Highlight | Easy Under-Sink Installation, Compatible with Most RO Filtration Systems, Durable Steel Construction for Long-Lasting Use |
| Item Weight | 3.47 kg |
| Lowertemperature Range | 33 °F |
| Manufacture Year | 2022 |
| Manufacturer | Express Water |
| Material Type | Steel |
| Maximum Flow Rate | 0.8 gpm |
| Model Name | V-RO132-TNK |
| Model Number | RO132-TNK |
| Number Of Items | 1 |
| Number Of Packs | 1 |
| Operating Pressure Range | 100 psi |
| Other Special Features Of The Product | Durability |
| Part Number | V-RO132-TNK |
| Power Source | Adapter |
| Purification Method | Reverse Osmosis |
| Supported Water Tds Level Maximum Ppm | 500 |
| Unit Count | 1 Count |
| Upc | 641990965834 |
| Upper Temperature Rating | 100 °F |
| Warranty Description | 1-Year Warranty |

## Product Details

- **Brand:** EXPRESS WATER
- **Capacity:** 4 gallons
- **Included Components:** 4-Gallon Water Storage Tank
- **Installation Type:** Under Sink
- **Material:** Steel
- **Package Information:** Tank
- **Power Source:** Adapter
- **Product Dimensions:** 15"L x 12"W x 12"H
- **Purification Method:** Reverse Osmosis
- **Special Feature:** Durability

## Images

![TankRo RO132-TNK Reverse Osmosis Water Storage Tank, 4 Gallon, White - Image 1](https://m.media-amazon.com/images/I/61HS3xWEkIL.jpg)

## Questions & Answers

**Q: what country made in?**
A: They’re made in Taiwan per the printing on the box which the tank arrived within.

**Q: 4 gallon okay in place of 3.2 gallon tank**
A: Yes I bought the 4.o gallon unit and it works fine.  I checked the pressure in the tank and had to pump it up to 8.0 psi for my system.

**Q: Will this work with a watts WP-4V and similar systems?**
A: It is a universal unit and will work with all RO systems. It may require an adopter based on tube size. Thx

**Q: has anyone checked their stored water for leeching chemicals?**
A: i have had my water checked for LEAD recently, no issues

## Frequently Bought Together

- tankRo RO132-TNK RO Water Filtration System Expansion Tank 4 Gallon Capacity – NSF Certified – Compact Reverse Osmosis Water Storage Pressure Tank 1/4" Tank Ball Valve
- Malida 1/4 inch O.D. Length 32.8ft(10 meters) RO Water Tubing, Hose Pipe for RO Water purifiers System,+ 1/4 O.D quick connector 10pcs
- DIGITEN 1/4" Automatic Shut-Off Valve with Quick-Connect Fittings For RO Reverse Osmosis(Pack of 2)

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**Shop now:** [https://www.desertcart.jp/products/12636522-tankro-ro132-tnk-reverse-osmosis-water-storage-tank-4-gallon](https://www.desertcart.jp/products/12636522-tankro-ro132-tnk-reverse-osmosis-water-storage-tank-4-gallon)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-09-17*