---
product_id: 97634529
title: "PA-E RO-122 Small Reverse Osmosis Water Storage Pressure Tank"
brand: "pa-e"
price: "€ 304.03"
currency: EUR
in_stock: false
reviews_count: 1
category: "Pa E"
url: https://www.desertcart.pt/products/97634529-pa-e-ro-122-small-reverse-osmosis-water-storage-pressure
store_origin: PT
region: Portugal
---

# 2.2-gallon capacity Pre-pressurized internal bladder NSF/ANSI Standard 58 certified PA-E RO-122 Small Reverse Osmosis Water Storage Pressure Tank

**Brand:** pa-e
**Price:** € 304.03
**Availability:** ❌ Out of Stock

## Summary

> 💧 Elevate your hydration game with pressure-perfect 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?** € 304.03 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/97634529-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

- • **Leak-Proof Durability:** Stainless steel connections and sealed brass air valve prevent leaks, ensuring long-lasting peace of mind.
- • **Compact & Versatile Fit:** Perfectly sized for under-sink RO systems, RVs, and campers—space-saving without compromising performance.
- • **Certified Safety & Purity:** NSF/ANSI Standard 58 certification guarantees your drinking water meets the highest health standards.
- • **Maintenance-Free Reliability:** Pre-charged internal diaphragm design delivers steady, pressurized water flow without hassle.
- • **Consistent Hydration On Demand:** 2.2-gallon capacity ensures you never run out of fresh, filtered water when you need it most.

## Overview

The PA-E RO-122 is a 2.2-gallon stainless steel reverse osmosis water storage tank designed for under-sink RO systems and compact spaces. Featuring a pre-pressurized internal bladder and NSF/ANSI Standard 58 certification, it delivers consistent, contaminant-free water with leak-proof durability and maintenance-free operation.

## 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

Review: Perfect replacement - Just what we needed to replace an old one.

## 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 |
|---------------|-------|
| ASIN | B00A7GFVI8 |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 668,473 in DIY & Tools ( See Top 100 in DIY & Tools ) 433 in Under-Sink Filters |
| Certification | certified frustration-free |
| Colour | White |
| Customer Reviews | 5.0 5.0 out of 5 stars (1) |
| Date First Available | 14 Oct. 2011 |
| Installation method | Under Sink |
| Item Package Quantity | 1 |
| Item Weight | 2.71 kg |
| Item model number | RO-122 |
| Manufacturer | PA-E |
| Part Number | RO-122 |
| Power Source | Corded Electric |
| Product Dimensions | 22.86 x 22.86 x 35.56 cm; 2.71 kg |
| Size | 2.9 gallons |
| Special Features | NSF certified |

## Product Details

- **Brand:** PA-E
- **Capacity:** 2.2 gallons
- **Included components:** Storage Tank, Tank Holding Bracket
- **Installation type:** Under Sink
- **Material:** Brass, Polypropylene, Stainless Steel
- **Package information:** Dispenser
- **Power source:** Corded Electric
- **Product dimensions:** 22.9L x 22.9W x 35.6H centimetres
- **Purification method:** Reverse Osmosis
- **Special feature:** NSF certified

## Images

![PA-E RO-122 Small Reverse Osmosis Water Storage Pressure Tank - Image 1](https://m.media-amazon.com/images/I/31d8tL0aS5L.jpg)
![PA-E RO-122 Small Reverse Osmosis Water Storage Pressure Tank - Image 2](https://m.media-amazon.com/images/I/31epDNEkUyL.jpg)
![PA-E RO-122 Small Reverse Osmosis Water Storage Pressure Tank - Image 3](https://m.media-amazon.com/images/I/41O5ymAf+oL.jpg)
![PA-E RO-122 Small Reverse Osmosis Water Storage Pressure Tank - Image 4](https://m.media-amazon.com/images/I/71TTzMKBfgL.jpg)
![PA-E RO-122 Small Reverse Osmosis Water Storage Pressure Tank - Image 5](https://m.media-amazon.com/images/I/71sgAMPuAFL.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.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect replacement
*by M***N on 14 June 2024*

Just what we needed to replace an old one.

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-02-07*