The PAE RO-120 is a 2.0 gallon pre-pressurized metal storage tank designed for reverse osmosis systems that demand reliable, contamination-resistant water storage. Its NSF 58 certified bladder design eliminates the need for a delivery pump while reducing microbial growth risks compared to atmospheric tanks.
SPECIFICATIONS
PAE RO-120 Technical Details
| Manufacturer | PAE Machinery Industrial CO. |
| Model Number | RO-120 (TK-PRO-2-SS) |
| Storage Capacity | 2.1 gallons |
| Dimensions | 8" diameter × 12" height |
| Connection Type | 1/4" NPT |
| Tank Type | Pre-pressurized metal bladder |
| Certification | NSF 58 Certified |
| Color | White |
INSTALLATION & USE
Installing Your PAE RO-120 Tank
- Verify the tank pre-charge pressure is between 5-7 PSI using a tire pressure gauge on the air valve before installation.
- Apply thread sealant tape to the 1/4" NPT connection and hand-tighten the tank ball valve or fitting to the tank port.
- Mount the tank upright in a location that allows access to the air valve for future pressure checks and supports the tank's weight when full.
- Connect the tank to your RO system's output line and allow the system to cycle through 2-3 full fills to flush the bladder before use.
COMPATIBILITY
System Requirements
The PAE RO-120 is compatible with most residential and light commercial reverse osmosis systems using standard 1/4" NPT connections. This tank works with systems producing up to 100 GPD and requires adequate supply pressure (typically 40-80 PSI) to maintain proper bladder function. Suitable for under-sink installations where compact storage is needed without sacrificing water availability between regeneration cycles.
🔧 Pro tip: Check and adjust the air pressure in your tank every 12 months. Low air pressure causes the bladder to overextend and reduces usable storage capacity, while excessive pressure prevents the tank from filling properly.
