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💧 Elevate your hydration game with the tank that professionals trust!
The Express Water RO Expansion Tank offers a 4-gallon capacity with a compact footprint designed to fit under most kitchen sinks. Constructed from 100% food-grade materials and durable alloy steel with precision welding, it ensures contaminant-free, fresh water storage. Featuring a 1/4" quick connect ball valve for easy installation, NSF certification, and a 1-year warranty, this tank delivers reliable, on-demand reverse osmosis water with a maximum working pressure of 100 PSI.
| ASIN | B00Q798N8E |
| Best Sellers Rank | #142,006 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #312 in Under-Sink Water Filters |
| Brand | Express Water |
| Brand Name | Express Water |
| Capacity | 4 gallons |
| Container Type | Dispenser |
| Customer Reviews | 4.6 out of 5 stars 2,146 Reviews |
| Global Trade Identification Number | 00641990965834 |
| Included Components | Tank Ball Valve, Tank Stand |
| Included components | Tank Ball Valve, Tank Stand |
| Installation Type | Under Sink |
| Item Dimensions L x W x H | 38.1L x 30.5W x 30.5H centimeters |
| Item Weight | 3.47 Kilograms |
| LowerTemperature Range | 33 Degrees Fahrenheit |
| Manufacture Year | 2022 |
| Manufacturer | Express Water Inc |
| Material | Alloy Steel, Polypropylene, Polyurethane |
| Material Type | Alloy Steel, Polypropylene, Polyurethane |
| Maximum Flow Rate | 0.8 Gallons Per Minute |
| Model Name | RO132-TNK |
| Model Number | RO132-TNK |
| Number of Items | 1 |
| Number of Packs | 1 |
| Other Special Features of the Product | NSF certified |
| Part Number | V-RO132-TNK |
| Power Source | Water Pressure |
| Product dimensions | 38.1L x 30.5W x 30.5H centimeters |
| Purification Method | Reverse Osmosis |
| Special features | NSF certified |
| Supported Water TDS Level Maximum (PPM) | 1000 |
| UPC | 641990965834 |
| Unit Count | 1 Count |
| Upper Temperature Rating | 100 Degrees Fahrenheit |
A**A
Not as show in photos
I received different brand not same as show in photos. Without back stand and Different Fittings.
S**.
Great price
Great price. Ready to go straight out of the box.
D**.
Replacement R/O tank
Easy to install. Pre-rinsed although I did flush it with fresh water twice. No odor- clean tasting water.
C**L
Easy installation, though curious about the manufacture date
I received the product today (April 29, 2026) and the installation was very straightforward. It seems to be working fine so far. However, I noticed the serial number starts with 2509, which makes me think it was manufactured in 2025. Given that I ordered it in 2026, I assume this is within the normal distribution timeframe for this type of product. Overall, I'm satisfied with the purchase.
S**T
Works as advertised. Fixed pressure issues
Fixed uneven water flow. Stores water under pressure.
S**Y
Nice capacity, good price.
Good tank with high capacity (for an RO system). I installed one of these a while ago; not sure how long, and it eventually failed. I just bought two and installed them in parallel so my system would have more capacity. I used plastic connectors on the output so I didn't think I needed to use thread seal tape, but both leaked immediately. Added thread seal tape, and they sealed tight.
Trustpilot
2 months ago
2 weeks ago