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The PAE RO-122 is a 3.2-gallon pre-pressurized metal bladder tank designed for reverse osmosis systems that need reliable storage without a delivery pump. Built with a 1/4" NPT connection and compact 9" × 14" footprint, this white metal tank prevents microbial contamination better than atmospheric storage.
SPECIFICATIONS
PAE RO-122 Tank Overview
Storage Volume
3.2 Gallons
Pre-pressurized bladder design
Dimensions
9" × 14"
Diameter × Height
Connection
1/4" NPT
Standard RO fitting size
Material
Metal
White finish
Tank Type
Pressurized
No delivery pump required
Manufacturer
PAE
Model RO-122
TECHNICAL DETAILS
RO-122 Metal Tank Specifications
| Manufacturer Part Number | RO-122 |
| Tank Capacity | 3.2 gallons (12.1 liters) |
| Exterior Dimensions | 9" diameter × 14" height |
| Connection Thread | 1/4" NPT male |
| Construction | Metal housing, white powder coat finish |
| Bladder Type | Pre-pressurized internal bladder |
| Operating Principle | Pressure differential storage (no pump needed) |
COMPATIBILITY & APPLICATIONS
Reverse Osmosis System Storage
The PAE RO-122 metal storage tank is compatible with residential and light commercial reverse osmosis systems using standard 1/4" quick-connect fittings. The pre-pressurized bladder design maintains water pressure for on-demand delivery without requiring a booster pump, and the sealed metal construction prevents the microbial growth and taste issues common in atmospheric storage tanks. Ideal for under-sink RO installations, water treatment facilities, and any application requiring 3.2 gallons of purified water storage in a compact, sanitary metal tank.
💧 Pressurized bladder tanks should be checked annually for proper air charge. If water flow weakens or the tank feels waterlogged, the bladder may need air adjustment or replacement.
