---
product_id: 605842625
title: "Small Water Pressure Tank for Tankless Reverse Osmosis System, RO Water Storage Tank with Fittings for Refrigerator, Ice Maker, Suitable for 1/4\" and 3/8\" Water Pipes"
brand: "simpure"
price: "¥17234"
currency: JPY
in_stock: true
reviews_count: 9
category: "Sim Pure"
url: https://www.desertcart.jp/products/605842625-small-water-pressure-tank-for-tankless-reverse-osmosis-system-ro
store_origin: JP
region: Japan
---

# 1.4L compact capacity Fits 1/4" & 3/8" pipes NSF/ANSI 58 certified quality Small Water Pressure Tank for Tankless Reverse Osmosis System, RO Water Storage Tank with Fittings for Refrigerator, Ice Maker, Suitable for 1/4" and 3/8" Water Pipes

**Brand:** simpure
**Price:** ¥17234
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your hydration game with seamless, pure flow—because waiting is so last decade.

## Quick Answers

- **What is this?** Small Water Pressure Tank for Tankless Reverse Osmosis System, RO Water Storage Tank with Fittings for Refrigerator, Ice Maker, Suitable for 1/4" and 3/8" Water Pipes by simpure
- **How much does it cost?** ¥17234 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/605842625-small-water-pressure-tank-for-tankless-reverse-osmosis-system-ro)

## Best For

- simpure enthusiasts

## Why This Product

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

## Key Features

- • **Space-Smart Design:** Compact 6.6"x9.2" footprint fits snugly under your sink, freeing up valuable kitchen real estate.
- • **Trusted Since 2006:** Proudly serving USA customers with expert support and durable filtration solutions you can rely on.
- • **Plug & Play Installation:** Includes all fittings for a hassle-free setup in under 5 minutes—compatible with most refrigerators and ice makers.
- • **Certified Pure Performance:** NSF/ANSI 58 tested and food-grade butyl diaphragm ensures tasteless, odorless, impurity-free water.
- • **Boost Your Tankless RO Flow:** Enhances water & ice supply with smooth, continuous pressure—no more waiting or pulsing taps.

## Overview

The SimPure Small Water Pressure Tank is a compact, NSF-certified storage solution designed to optimize tankless reverse osmosis systems. With a 1.4L capacity and compatibility for 1/4" and 3/8" water pipes, it ensures steady water pressure for refrigerators and ice makers. Its food-grade butyl diaphragm guarantees pure, tasteless water, while the space-saving design fits easily under sinks. Easy to install with included fittings, this tank enhances water flow and system responsiveness, backed by SimPure’s trusted quality since 2006.

## Description

SimPure Small Water Pressure Tank for Tankless Reverse Osmosis System, RO Water Storage Tank with Fittings for Refrigerator, Ice Maker, Suitable for 1/4" and 3/8" Water Pipes - desertcart.com

Review: Works great and easy to install - I just received this pressure tank. It took less than 3 minutes to install and test. I am very impressed by this tank. I installed it in minutes and it solved the problem I had with pulsing water coming from my instant water heater. I couldn't believe how easy it was to install and use this tank.
Review: I am so Happy...I love my water & ice! - We added an Ispring Tankless RO water system under our sink, but you need an additional pressure tank for the fridge/Ice maker connection. We chose this due the small size. It works great! Now we have great ice & water and an additional bonus is the increased water flow & immediate responsiveness at the tap. My husband did have to get some additional fittings/adaptors to make it work, but well worth it. Highly recommend.

## Features

- ENHANCED PERFORMANCE of TANKLESS RO SYSTEM: The compact water pressure tank from SimPure is engineered to boost the capabilities of tankless RO systems. It ensures smooth coordination with the refrigerator and ice maker, cutting down on the need for frequent reboots. It extends the reach of the RO system to guarantee continuous water flow and ice supply, enabling quick access to water without any waiting
- NSF CERTIFIED and TESTED: The reverse osmosis tank has been tested and certified by NSF, meets the NSF/ANSI 58 Standard, and complies with material and structural integrity requirements. Each pressure tank undergoes rigorous quality and durability testing, ensuring exceptional quality and performance. This water storage tank is crafted from a food-grade butyl diaphragm, providing a tasteless and odorless water chamber that keeps your water free from impurities
- SIMPLE INSTALLATION: The user manual provides clear and easy-to-follow instructions for installing the water pressure tank. The RO tank includes all necessary fittings for effortless connection to the refrigerator or ice maker, it can be set up with 1/4" and 3/8" water pipes, which is a perfect addition to any RO water system
- SPACE-SAVING DESIGN: The small pressurized tank features a compact size (Φ 6.6*9.2) with a 1.4L capacity, saving under-sink space and eliminating the need for a tank stand. It is the perfect fit for all tankless RO systems, including T1-400UV, T1-400ALK, Q3-600, G3P600, G2P600, G3P800, G2, G3, D6, D4, PD400, PD500, PD600, PX500, KFL-X6, PL400G, CUW4, etc
- SERVING USA SINCE 2006: Seattle, WA USA, SimPure is dedicated to providing world-class quality water filtration solutions. If you are not satisfied with your purchase, then we want to hear from you. Please contact our trained water specialists. And is available to answer any questions during the life of the product

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CS5VBK9S |
| Batteries required | No |
| Best Sellers Rank | #69,946 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #150 in Under-Sink & Countertop Filtration |
| Brand | SimPure |
| Capacity | 0.32 Gallons |
| Color | White |
| Customer Reviews | 4.5 4.5 out of 5 stars (212) |
| Included Components | Pressure water tank*1, accessories kit*1 |
| Item Weight | 2.51 pounds |
| Manufacturer | SimPure |
| Material | BPA-Free |
| Product Dimensions | 6.2"L x 6.2"W x 9"H |
| Shape | Rectangular |
| Specification Met | NSF/ANSI 58 Standard |

## Product Details

- **Brand:** SimPure
- **Capacity:** 0.32 Gallons
- **Color:** White
- **Material:** BPA-Free
- **Product Dimensions:** 6.2"L x 6.2"W x 9"H

## Images

![Small Water Pressure Tank for Tankless Reverse Osmosis System, RO Water Storage Tank with Fittings for Refrigerator, Ice Maker, Suitable for 1/4" and 3/8" Water Pipes - Image 1](https://m.media-amazon.com/images/I/51yJrbzZf7L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works great and easy to install
*by J***K on November 14, 2025*

I just received this pressure tank. It took less than 3 minutes to install and test. I am very impressed by this tank. I installed it in minutes and it solved the problem I had with pulsing water coming from my instant water heater. I couldn't believe how easy it was to install and use this tank.

### ⭐⭐⭐⭐⭐ I am so Happy...I love my water & ice!
*by S***C on June 10, 2025*

We added an Ispring Tankless RO water system under our sink, but you need an additional pressure tank for the fridge/Ice maker connection. We chose this due the small size. It works great! Now we have great ice & water and an additional bonus is the increased water flow & immediate responsiveness at the tap. My husband did have to get some additional fittings/adaptors to make it work, but well worth it. Highly recommend.

### ⭐⭐⭐⭐⭐ Solved Flow Rate Problem
*by C***S on January 10, 2026*

We installed an additional RO faucet in our bathroom, using about 35' of 1/4" tubing from our kitchen system. Because of the long run of tubing to the bathroom sink, the flow rate was painfully low, 10 seconds to fill just 8 ounces. We installed this SimPure tank under the sink and PERFECT! Great water flow to fill a glass, 3 seconds to fill the same 8 ounces, while loosing virtually no space under the sink.

## Frequently Bought Together

- SimPure Small Water Pressure Tank for Tankless Reverse Osmosis System, RO Water Storage Tank with Fittings for Refrigerator, Ice Maker, Suitable for 1/4" and 3/8" Water Pipes
- SimPure T1-400UV Tankless Reverse Osmosis System with UV, NSF/ANSI 58 Certified, Under Sink RO Water Filter System 400 GPD, 8 Stage Filtration Near 0 TDS, Built-in Pump, BPA Free, 1.5:1 Pure to Drain
- SimPure T1-100/1-400UV 6-Month Replacement Filter Cartridge Pack Set for Model T1-100, T1-400UV (1*PP + 1*CTO + 1*T33)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-27*