---
product_id: 404395347
title: "PMT Small Water Pressure Tank, RO Pressure Tank for All Tankless Reverse Osmosis System, Mini Reverse Osmosis Storage Tank Fits All 1/4\" Water Tubing, Small Water Tank for G3, G2, D6, PD600"
brand: "waterdrop"
price: "$93.81"
currency: USD
in_stock: true
reviews_count: 11
category: "Waterdrop"
url: https://www.desertcart.us/products/404395347-pmt-small-water-pressure-tank-ro-pressure-tank-for-all
store_origin: US
region: United States of America
---

# Fits all 1/4" tubing for seamless RO integration Supports up to 203°F & 2000 PPM TDS water Compact 4.1x4.1x7.3 in size PMT Small Water Pressure Tank, RO Pressure Tank for All Tankless Reverse Osmosis System, Mini Reverse Osmosis Storage Tank Fits All 1/4" Water Tubing, Small Water Tank for G3, G2, D6, PD600

**Brand:** waterdrop
**Price:** $93.81
**Availability:** ✅ In Stock

## Summary

> 🚀 Upgrade your hydration game with pressure-perfect water flow!

## Quick Answers

- **What is this?** PMT Small Water Pressure Tank, RO Pressure Tank for All Tankless Reverse Osmosis System, Mini Reverse Osmosis Storage Tank Fits All 1/4" Water Tubing, Small Water Tank for G3, G2, D6, PD600 by waterdrop
- **How much does it cost?** $93.81 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/404395347-pmt-small-water-pressure-tank-ro-pressure-tank-for-all)

## Best For

- waterdrop enthusiasts

## Why This Product

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

## Key Features

- • **Space-Smart Design:** Compact footprint fits under sinks without clutter, perfect for modern kitchens.
- • **Leak-Proof Assurance:** Engineered with secure fittings and clear instructions to prevent leaks and drips.
- • **Boosts Water Pressure:** Ensures steady, fast water flow to your fridge and faucet, eliminating slow fills.
- • **Effortless Installation:** 1/4" quick-connect design makes setup a snap—no plumber needed.
- • **Universal Compatibility:** Works flawlessly with all tankless RO systems including Waterdrop G3, G2, D6, PD600.

## Overview

The Waterdrop PMT Small Water Pressure Tank is a compact, high-performance storage tank designed to enhance all tankless reverse osmosis systems. It fits standard 1/4" tubing and supports water temperatures up to 203°F and TDS levels up to 2000 ppm. This tank boosts water pressure for faster dispensing, especially to refrigerators and ice makers, while its quick-connect design ensures easy installation without leaks. Ideal for millennials seeking efficient, space-saving water solutions that keep their kitchens sleek and their hydration on point.

## Description

Waterdrop PMT Small Water Pressure Tank, RO Pressure Tank for All Tankless Reverse Osmosis System, Mini Reverse Osmosis Storage Tank Fits All 1/4" Water Tubing, Small Water Tank for G3, G2, D6, PD600: desertcart.com: Tools & Home Improvement

Review: Excellent, especially if you tie in your refrigerator. - I purchased this small stand alone tank to go with our Waterdrop system that we installed. It comes with all of the parts and pieces that you need to attach it to your system so that your water runs through the RO system and fills up the tank, and in my case, feeds the faucet above as well as the refrigerator. It does allow us to fill a glass of water up much faster than going straight from the RO system because the tank is already filled, and it pulls from the tank quicker than just straight through the RO system. In doing my research, I read that if you’re going to have your refrigerator hooked up to your RO system, you would need a tank to provide more pressure to get the water to your refrigerator for ice and water, so that is the main reason that we bought it and it works quite well. It integrated with our current Waterdrop RO system quite well and quite easily. If working with this type of stuff intimidates you, don’t let that be a deterrent, the 1/4 inch hoses snapped in quite easily to all of the parts and components and they have a little blue clips to hold them in place so no leaking. In other words, it doesn’t take rocket science to put it all together and the instructions are quite simple. The only drawback I found with this particular tank is it has a very small pedestal and does not stand up very well, especially with all the quarter inch hoses attached to it so it tends to be top-heavy. I plan on finding some type of bracket to attach it to to hold it to the side wall so that it doesn’t fall over and roll around underneath the sink. But other than that, I highly recommend it, especially if you have a refrigerator that you want ice and water too.
Review: A breeze to install - I've had a tankless RO system for 2 years now and I've just dealt with the low pressure going to my refrigerator. Finally, I decided to look up a solution and found this item. I decided to take a chance and lo and behold, IT WORKS! I was a bit nervous to cut my line to the refrigerator without know that this will actually work, but I took a chance anyways. I'm happy to say that I now have enough pressure going to my refrigerator from this to fill up the ice maker and make a glass of water before it starts to slow down again. But luckily, by the time it starts to slow now, the RO system is flowing and the water is steady. Previously, when I get water from my refrigerator, the RO system would turn on and then shut off constantly causing the water to just pump out slowly. Now I don't have this problem anymore.

## Features

- 𝐂𝐨𝐧𝐯𝐞𝐧𝐢𝐞𝐧𝐭 𝐈𝐧𝐬𝐭𝐚𝐥𝐥𝐚𝐭𝐢𝐨𝐧: The user manual provides simple instructions on how to install this water pressure tank. You get a 1/4"quick-connect design out-of-the-box. All you have to do to complete the installation is to cut off the water outlet tubing of the tankless RO water filter systems, then insert both ends of the tubing into the tank. If your water pipe is 3/8", please contact customer service.
- 𝐐𝐮𝐢𝐜𝐤-𝐟𝐢𝐭𝐭𝐢𝐧𝐠 𝐥𝐞𝐚𝐤𝐚𝐠𝐞:After installation, please confirm if PE pipe is cut smoothly. If not, cut the tubing squarely and cleanly. Make sure the tubing is fully inserted.
- 𝐋𝐞𝐚𝐤𝐚𝐠𝐞 𝐛𝐞𝐭𝐰𝐞𝐞𝐧 𝐛𝐚𝐥𝐥 𝐯𝐚𝐥𝐯𝐞 𝐚𝐧𝐝 𝐭𝐡𝐞 𝐭𝐚𝐧𝐤: Please check if there is a washer connecting the ball valve, if not, please contact us for a new ball valve.
- 𝐖𝐚𝐭𝐞𝐫 𝐝𝐨𝐞𝐬𝐧'𝐭 𝐜𝐨𝐦𝐞 𝐨𝐮𝐭: Please check if the internal membrane breaks. Unsrew off the stem and you will see a protruding charging valve, then press the charging valve. If water flows out, it indicates the internal membrane breaks. Please change a new storage tank. If no water flows out, please contact customer service.
- 𝐍𝐎𝐓𝐄: If you connect ro system to refrigerator through the mini tank, replace the filter in your refrigerator with bypass.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09MD7FFYP |
| Best Sellers Rank | #20,773 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #49 in Under-Sink & Countertop Filtration |
| Brand | Waterdrop |
| Date First Available | November 22, 2021 |
| Installation Type | Under Sink |
| Item Weight | 2.16 pounds |
| Item model number | WD-PMT |
| Lower Temperature Rating | 104 Degrees Fahrenheit |
| Manufacturer | Waterdrop |
| Model Name | WD-PMT |
| Package Information | Box |
| Product Dimensions | 4.1"L x 4.1"W x 7.3"H |
| Special Feature | Allow your tankless ro to work perfect with refrigerator or ice maker, avoiding frequent reboot., Perfectly fits for all tankless RO systems. |
| Supported Water TDS Level Maximum (PPM) | 2000 |
| Upper Temperature Rating | 203 Degrees Fahrenheit |

## Product Details

- **Brand:** Waterdrop
- **Capacity:** 0.26 Gallons
- **Included Components:** Pressure mini water tank
- **Installation Type:** Under Sink
- **Material:** BPA-Free
- **Model Name:** WD-PMT
- **Package Information:** Box
- **Product Dimensions:** 4.1"L x 4.1"W x 7.3"H
- **Purification Method:** Reverse Osmosis

## Images

![PMT Small Water Pressure Tank, RO Pressure Tank for All Tankless Reverse Osmosis System, Mini Reverse Osmosis Storage Tank Fits All 1/4" Water Tubing, Small Water Tank for G3, G2, D6, PD600 - Image 1](https://m.media-amazon.com/images/I/61iLPCwo1kL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent, especially if you tie in your refrigerator.
*by R***M on January 5, 2026*

I purchased this small stand alone tank to go with our Waterdrop system that we installed. It comes with all of the parts and pieces that you need to attach it to your system so that your water runs through the RO system and fills up the tank, and in my case, feeds the faucet above as well as the refrigerator. It does allow us to fill a glass of water up much faster than going straight from the RO system because the tank is already filled, and it pulls from the tank quicker than just straight through the RO system. In doing my research, I read that if you’re going to have your refrigerator hooked up to your RO system, you would need a tank to provide more pressure to get the water to your refrigerator for ice and water, so that is the main reason that we bought it and it works quite well. It integrated with our current Waterdrop RO system quite well and quite easily. If working with this type of stuff intimidates you, don’t let that be a deterrent, the 1/4 inch hoses snapped in quite easily to all of the parts and components and they have a little blue clips to hold them in place so no leaking. In other words, it doesn’t take rocket science to put it all together and the instructions are quite simple. The only drawback I found with this particular tank is it has a very small pedestal and does not stand up very well, especially with all the quarter inch hoses attached to it so it tends to be top-heavy. I plan on finding some type of bracket to attach it to to hold it to the side wall so that it doesn’t fall over and roll around underneath the sink. But other than that, I highly recommend it, especially if you have a refrigerator that you want ice and water too.

### ⭐⭐⭐⭐⭐ A breeze to install
*by J***N on October 3, 2024*

I've had a tankless RO system for 2 years now and I've just dealt with the low pressure going to my refrigerator. Finally, I decided to look up a solution and found this item. I decided to take a chance and lo and behold, IT WORKS! I was a bit nervous to cut my line to the refrigerator without know that this will actually work, but I took a chance anyways. I'm happy to say that I now have enough pressure going to my refrigerator from this to fill up the ice maker and make a glass of water before it starts to slow down again. But luckily, by the time it starts to slow now, the RO system is flowing and the water is steady. Previously, when I get water from my refrigerator, the RO system would turn on and then shut off constantly causing the water to just pump out slowly. Now I don't have this problem anymore.

### ⭐⭐⭐⭐⭐ Works exactly how I hoped.
*by M***N on December 17, 2023*

So glad we got this to complement our Waterdrop RO. Our fridge icemaker did work okay without it, but we had to wait 2-3 seconds every time when getting water from the fridge dispenser for the water to start, which was annoying. This also caused the dispenser to initially drip each time before the pressure made it there, creating additional cleanup of the area and drip tray below. Now the fridge dispenses instantaneously like it did on a traditional setup. Initial water pressure at the sink dispenser is also greatly improved. Install was very easy. It comes with all materials needed and took just one cut of an included water line and plugging the lines in as instructed. All fittings are slip-in, so no additional tools required. I do understand this in a way defeats the concept of a tankless RO, but the footprint is much smaller than a traditional tank RO system, and maintenance is much easier and cleaner. Parts are all high quality. Previously when using the RO you could hear the tankless system running right away, with this mini-tank you'll notice there is a delay as the water from the tank is used initially then runs a few moments after turning it off to fill the tank again. Just something to be aware of. Would definitely buy again.

## Frequently Bought Together

- Waterdrop PMT Small Water Pressure Tank, RO Pressure Tank for All Tankless Reverse Osmosis System, Mini Reverse Osmosis Storage Tank Fits All 1/4" Water Tubing, Small Water Tank for G3, G2, D6, PD600
- Waterdrop G3P600 Reverse Osmosis System, 8 Stage Tankless Reverse Osmosis Water Filter, NSF/ANSI 42 & 58 & 372 Certified, Under Sink RO System, 2:1 Pure to Drain, Smart LED Faucet
- Waterdrop Remineralization Under Sink Water Filtration, 1/4” Quick Connect Post Filter for RO Reverse Osmosis Filter System, Restore Essential Minerals

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-06*