The BeerBlast™ and N2-GEN™ product lines are South-Tek Systems' nitrogen generation systems designed for draft beverage service in restaurants, bars, and breweries. Each model uses Pressure Swing Adsorption (PSA) technology to separate nitrogen from compressed air and supply it — alone or blended with CO2 — to pressurize kegs and beverage lines.
BeerBlast™ models include an integrated McDantim™ dual-output gas blender that precisely mixes N2 with CO2 at 60/40 and 25/75 ratios (±2%). N2-GEN™ models produce nitrogen only and do not include a gas blender.
Model Comparison
Use the table below to identify your model and confirm key specifications before beginning any installation, maintenance, or troubleshooting procedure.
| Model | KPH | N2 Purity | N2 Storage Pressure | CO2 Inlet Required | Form Factor | Controller | Annual Filter Kit | Weight |
|---|---|---|---|---|---|---|---|---|
| BeerBlast™ / N2-GEN™ 1KPH | 1 | 99.8+% | 60–70 PSIG | 60–80 PSIG | Wall mounted | Pressure switch / indicator lights | FRP-001 | 75 lbs |
| BeerBlast™ / N2-GEN™ 3KPH | 3 | 99.7+% | 60–70 PSIG | 60–80 PSIG | Wall or tank mounted | Pressure switch / indicator lights | FRP-001 | 75 lbs |
| BeerBlast™ / N2-GEN™ 7KPH | 7 | 99.8+% | 70–85 PSIG | 70–100 PSIG | Wall mounted | Panasonic FP-e PLC | FRP-001 | ~85 lbs |
| BeerBlast™ / N2-GEN™ 14KPH | 14 | 99.8+% | 70–85 PSIG | 75–100 PSIG | Floor standing | Panasonic FP-e PLC | FRP-001 | ~265 lbs |
| BeerBlast™ / N2-GEN™ 14KPH-HO | 14 | 99.8+% | 85–95 PSIG | 85–100 PSIG | Floor standing | Panasonic FP-e PLC | FRP-005 | ~275 lbs |
How the System Works
All BeerBlast and N2-GEN models use the same core PSA process. Ambient air — which is approximately 79% nitrogen — is drawn in and compressed by an integrated oil-free compressor. The compressed air passes through particulate and coalescing filters to remove moisture and contaminants before entering the PSA beds. The beds cycle alternately between adsorption and regeneration, allowing high-purity nitrogen to pass through to the internal storage tank. When the storage tank reaches the cut-out pressure, the system enters Standby mode automatically. When pressure drops back to the cut-in threshold, it restarts. No manual intervention is required during normal operation.
On BeerBlast models, the generated nitrogen feeds into an integral McDantim™ dual-output gas blender along with CO2 from an external customer-supplied source. The blender produces two simultaneous outputs at factory-set ratios: 60% CO2 / 40% N2 and 25% CO2 / 75% N2. N2-GEN models output nitrogen only.
Controller Types
The 1KPH and 3KPH use a simple pressure switch with indicator lights — green for Run, amber for Standby, red for BlastOff alarm. There is no digital display and no filter timer on these models.
The 7KPH, 14KPH, and 14KPH-HO use a Panasonic FP-e PLC with a digital display that shows run hours, system status (Run / StdBy), and alarm codes. These models include a filter change timer that triggers a "FILtr" alarm at 1,000 hours and must be manually reset after filter replacement. See the filter replacement article for your model for reset instructions.
BlastOff™ Leak Detection
All models include the patented BlastOff™ Leak Detection System as standard. BlastOff monitors downstream gas lines from the generator to the kegs and triggers an alarm if it detects characteristics consistent with a line leak. On 1KPH and 3KPH models, the alarm activates a buzzer and red indicator light. On 7KPH, 14KPH, and 14KPH-HO models, the display additionally shows an alarm code. In all cases, the system shuts down automatically when BlastOff trips. See the BlastOff Leak Detection article for reset and troubleshooting procedures.
N2 Backup Cylinder
All models support connection of an external N2 backup cylinder on Port 4 (N2 Out). The backup cylinder bypasses the generator and feeds the storage tank and blender directly during a power outage or generator issue. Backup cylinder regulator pressure requirements vary by model — refer to the Installation article for your specific model before connecting a backup supply.
BeerBlast™ Plus
Related Articles
| Article | Applies To |
|---|---|
| Safety Guidelines — BeerBlast / N2-GEN | All models |
| Installation & Startup — 1KPH / 3KPH | 1KPH, 3KPH |
| Installation & Startup — 7KPH | 7KPH |
| Installation & Startup — 14KPH / 14KPH-HO | 14KPH, 14KPH-HO |
| Annual Filter Replacement — 1KPH / 3KPH | 1KPH, 3KPH |
| Annual Filter Replacement — 7KPH / 14KPH | 7KPH, 14KPH |
| Annual Filter Replacement — 14KPH-HO | 14KPH-HO |
| BlastOff™ Leak Detection System | All models |
| Pressure Troubleshooting | All models |
| Power Troubleshooting | All models |
Contact South-Tek Systems
Phone: (910) 415-1880
Email / Ticket: support@southteksystems911.zendesk.com