---
product_id: 347958740
title: "PA-E RO-122 small Reverse Osmosis Water storage pressure tank"
brand: "pa-e"
price: "€ 306.53"
currency: EUR
in_stock: true
url: https://www.desertcart.de/products/347958740-pa-e-ro-122-small-reverse-osmosis-water-storage-pressure
store_origin: DE
region: Germany
---

# 2.2-gallon capacity Pre-pressurized, maintenance-free NSF/ANSI Standard 58 certified PA-E RO-122 small Reverse Osmosis Water storage pressure tank

**Brand:** pa-e
**Price:** € 306.53
**Availability:** ✅ In Stock

## Summary

> 💧 Elevate your hydration game with pressurized purity!

## Quick Answers

- **What is this?** PA-E RO-122 small Reverse Osmosis Water storage pressure tank by pa-e
- **How much does it cost?** € 306.53 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/347958740-pa-e-ro-122-small-reverse-osmosis-water-storage-pressure)

## Best For

- pa-e enthusiasts

## Why This Product

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

## Key Features

- • **Space-Savvy Design:** Compact stainless steel tank fits perfectly under sinks, in RVs, or campers without sacrificing performance.
- • **Plug & Play Pressure:** Pre-charged internal bladder design means zero setup hassle and maintenance-free operation.
- • **Certified Clean & Safe:** NSF/ANSI Standard 58 certification guarantees contaminant-free, tasteless, and odorless water.
- • **Leak-Proof Reliability:** Sealed brass air valve and o-ring cap ensure a durable, leak-free water storage experience.
- • **Consistent Hydration On Demand:** 2.2-gallon capacity ensures steady, pressurized filtered water whenever you need it.

## Overview

The PA-E RO-122 is a compact, stainless steel reverse osmosis water storage tank with a 2.2-gallon capacity, designed for under-sink RO systems. Featuring a pre-pressurized internal bladder and NSF/ANSI Standard 58 certification, it delivers consistent, contaminant-free water with a leak-proof, maintenance-free design ideal for modern, space-conscious homes and mobile lifestyles.

## Description

The RO-122 tank's water storage chamber features a virgin polypropylene liner, high-grade chlorobutyl diaphragm and stainless steel 1/4" MPT water connection. The diaphragm is post-cured to ensure that your water is tasteless, odorless and contaminant free. The tank is built with a sealed brass air valve and o-ring sealed cap to ensure a leak-free air chamber. Perfect for compact under sink RO units, RVs, Campers, or any other use where space is limited. This tank discharges efficiently in a vertical or horizontal position. Tank comes with Pre-charged pressure and ready to use. A Fitting is required to connect to your water system and faucet

## Features

- [TORAGE TANK FOR HOME SYSTEMS: The PAE RO-122 stainless steel reverse osmosis storage tank is compatible with most under-sink RO water filter systems
- With a 2.2-gallon total volume capacity, it provides a consistent supply of pressurized filtered water on demand
- MAINTENANCE-FREE PRESSURE TANK: This RO water storage tank is NSF/ANSI Standard 58 certified, meeting strict health and safety standards for drinking water systems
- It is pre-pressurized, INTERNAL BLADDER DESIGN: The PAE RO-122 bladder-style reverse osmosis tank uses a pre-charged internal diaphragm to deliver steady, pressurized water flow., SAFE MATERIALS FOR CLEAN DRINKING WATER
- The diaphragm inside this reverse osmosis water pressure tank is post-cured to remove harmful chemicals and residues, ensuring cleaner, safer water.]

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | PA-E |
| Special Feature | NSF certified |
| Product Dimensions | 22.9L x 22.9W x 35.6H Centimeters |
| Package Information | Can |
| Installation Type | Under Sink |
| Model Name | RO 122 |
| Supported Water TDS Level Maximum (PPM) | 500 |
| UPC | 670541140116 661799343824 |
| Manufacturer | PAE |
| Country of Origin | USA |
| Item model number | RO-122 |
| ASIN | B00A7GFVI8 |

## Product Details

- **Brand:** PA-E
- **Special Feature:** NSF certified
- **Product Dimensions:** 22.9L x 22.9W x 35.6H Centimeters
- **Package Information:** Can
- **Installation Type:** Under Sink

## Images

![PA-E RO-122 small Reverse Osmosis Water storage pressure tank - Image 1](https://m.media-amazon.com/images/I/71sgAMPuAFL.jpg)
![PA-E RO-122 small Reverse Osmosis Water storage pressure tank - Image 2](https://m.media-amazon.com/images/I/815AljmHu1L.jpg)
![PA-E RO-122 small Reverse Osmosis Water storage pressure tank - Image 3](https://m.media-amazon.com/images/I/71TTzMKBfgL.jpg)

## Questions & Answers

**Q: how much time it's good until need replacement ?**
A: Mine lasted 18 months.  Considering it was a replacement for a different tank that lasted 5 years, I consider that pretty poor.

**Q: How much pressure is in it when received?**
A: It comes with the proper pressure.  Over time, the pressure will get too low.  Go on YouTube to
For instructions on how to re-pressurize.

**Q: Pba free?**
A: works well

**Q: What's the recommended pressure to keep on the bladder?  8psi?**
A: Pre-charge with 5-7 psi of air pressure. When tank is full it may reach 45 to 50 psi of pressure depending on your RO system.

## Frequently Bought Together

- Hydronix PA-E RO-122 Small Reverse Osmosis Water Storage Pressure
- John Guest 3/8 Inch O.D. Tube Size x 1/4 Inch NPTF Speedfit to Female Shut Off Valve, Push to Connect Plastic Plumbing Fitting, PPSV501222WP
- Metpure Quick Connect Tank Ball Valve with Gasket For Water Purification Systems And Reverse Osmosis System Pressurized Water Storage Tank (1/4" Female NPT x 3/8" OD Quick Connect)

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*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-02-23*