PAE RO-122 Reverse Osmosis Storage Tank, 3.2 Gallon (12L), 1/4″ NPT, Compact – with Stand & Free Tank Valve – SKU: RO-TANK-122
$44.95
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Description
Compact replacement tank for under-sink RO
PAE RO-122 12-liter RO water storage tank with stand and free shut-off valve
The standard 3.2-gallon RO tank that most under-sink reverse osmosis systems ship with. PAE’s 12-liter steel tank keeps about 2–2.2 gallons of RO water ready at the faucet, held behind a food-grade butyl bladder and pushed out by the factory air charge. At about 15″ tall and 8.5″ across, it fits tight sink cabinets. It comes with a matching stand and a free 1/4″ tank ball valve, and connects with the standard 1/4″ NPT port used by most under-sink RO systems.
3.2 gal / 12 LNominal tank volume
~2–2.2 galUsable RO water
15″ × 8.5″Compact size
NSF/ANSI 58Certified tank component
Fits Tight CabinetsOnly 8.5″ wide — room left for the RO system and plumbing.
Certified ComponentListed to NSF/ANSI 58 as an RO storage tank (TankPAC / Global Water Solutions).
Stand + Free ValveTank stand and 1/4″ ball valve included, ready to install.
Tested to 144 PSIPowder-coated steel, rated for 100 PSI working pressure.
Specifications
Product details
| Model | PAE TankPAC RO-122 (type MTRA-12-7) |
|---|---|
| Brand / manufacturer | PA-E® / TankPAC Industries – Global Water Solutions, made in Taiwan |
| Nominal volume | 12 liters / 3.2 gallons |
| Usable water | About 2–2.2 gallons; varies with line pressure and air precharge |
| Tank connection | 1/4″ NPT, male thread (top port) |
| Included valve | 1/4″ ball valve, 1/4″ FPT × 1/4″ tube quick-connect |
| Includes | Tank + stand + free ball valve |
| Construction | Steel shell, white powder coat, food-grade butyl bladder |
| Factory air precharge | 7 PSI (0.5 bar) |
| Working / test pressure | 100 PSI (6.9 bar) / 144 PSI (9.9 bar) |
| Water temperature | 40–122°F (4–50°C), per tank label |
| Approx. size | 15″ tall × 8.5″ diameter |
| Certification | NSF/ANSI 58 (storage tank component), CE |
| Color | White |
| SKU | RO-TANK-122 |
Nominal volume is the tank’s total size. Usable water is lower because the air side of the bladder takes up part of the tank, and it depends on your feed pressure, air precharge and the RO system’s shut-off pressure. Need more water on hand? The full-size RO-132 (18 L / 4.8 gal) holds about 3.5 gallons. Check the air precharge (about 7 PSI with the tank empty) at the Schrader valve under the blue cap before installing, and wrap the tank port with PTFE tape before threading on the valve. The tank stores RO water; it does not filter or treat water itself, and the NSF/ANSI 58 certification covers the tank as a component, not a complete RO system. For RO storage only. The manufacturer recommends professional installation.
Additional information
| Weight | 140 oz |
|---|---|
| Dimensions | 14 × 10 × 10 in |
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