N2Blast® – Corrosion Inhibiting System
Internal corrosion of sprinkler pipe is one of the foremost issues facing the Fire Protection industry. It leads to costly and extensive pipe repairs that can shut down or delay production in a manufacturing setting, reduce usable space in garage and warehouse settings, and force relocation of tenants or patients in residential and hospital settings. Corrosion leads to the formation of localized pinholes and the resulting sprinkler pipe leaks can cause catastrophic property and equipment damage in facilities such as data centers and museums. More importantly, internal corrosion can cause sprinkler head blockage, reduce flow rates, and render fire protection systems completely inoperable in the event of a fire – leading to loss of life and property.
Introducing the N2-Blast® – Corrosion Inhibiting System, recipient of the coveted NACE Corrosion Innovation of the Year Award. The N2-Blast® – Corrosion Inhibiting System generates and introduces up to 99.9995% pure nitrogen into the dry or preaction fire protection system. In doing so, oxygen, a key contributor to the corrosion reaction, is displaced from the piping through the AutoPurge System™. The N2-Blast® effectively inhibits Electrochemical, Galvanic and Microbiologically Influenced Corrosion (MIC), as well as sprinkler pipe ice plugs. Take action by displacing trapped moisture and oxygen from within the sprinkler piping with the N2-Blast® and help ensure that your fire protection system works effectively in the event of an emergency.
To view the N2-Blast® Legacy line which includes the FPS models 650, 1250, 1750, 3000, 6000, 15000, and 20000, click here.

N2Blast® - FPS-500 Nitrogen Generator
FPS Series Nitrogen Generator
Handles up to 500 gallons of FPS sprinkler pipe capacity
UL508A Listed Industrial Control Panel
BlastOff™ I – Leak Detection System
BlastOff™ II – Air Bypass Tamper Alarm
Internal feed air compressor (not intended for quick-fill operation)
Minimum outlet pressure of 60 PSI
(28) gallon nitrogen storage tank (15” Dia. X 50” H)
Includes (1) Quick-Check® - Portable Nitrogen Purity Sensor per project
OPTIONAL FEATURES
Upgraded air compressor package for quick-fill operation (635 gal. @ 40PSI)
Specifications
Minimum Nitrogen purity | 98% |
Dew point | -40° to -70° F |
Electrical | 110 VAC, 15 AMPS |
Dimensions | 29” H x 15” W x 10” D |
Documents & Resources

N2Blast® - FPS-900 Nitrogen Generator
FPS Series Nitrogen Generator
Handles up to 900 gallons of total FPS sprinkler pipe capacity
UL508A Listed Industrial Control Panel
BlastOff™ I – Leak Detection System
BlastOff™ II – Air Bypass Tamper Alarm
Internal feed air compressor (not intended for quick-fill operation)
Minimum outlet pressure of 60 PSI
(28) gallon nitrogen storage tank (15” Dia. X 50” H)
Includes (1) Quick-Check® - Portable Nitrogen Purity Sensor per project
OPTIONAL FEATURES
Upgraded air compressor package for quick-fill operation (635 gal. @ 40PSI)
Specifications
Minimum Nitrogen purity | 98% |
Dew point | -40° to -70° F |
Electrical | 110 VAC, 15 AMPS |
Dimensions | 29” H x 15” W x 10” D |
Documents & Resources

N2Blast® - FPS-1650 Nitrogen Generator
FPS Series Nitrogen Generator
Handles up to 1,650 gallons of FPS sprinkler pipe capacity
UL508A Listed Industrial Control Panel
3.5” Touchscreen display (HMI) with SMART-Track technology
- Real-time status of nitrogen generator, FPS leak rate, runtime, maintenance reminders, and remote monitoring capabilities
- Ability to monitor nitrogen generator remotely via internet or app
- BlastOff™ I – Leak Detection System
- BlastOff™ II – Automatic Air Bypass Alarm
Minimum outlet pressure of 60 PSI
Internal (16.8) gallon nitrogen storage tank
Includes (1) Quick-Check® - Portable Nitrogen Purity Sensor per project
OPTIONAL FEATURES
Upgraded air compressor package for quick-fill operation (635 gal. @ 40PSI)
BlastOff™ III – Early Warning System (includes additional year warranty)
BlastOff™ IV – Onboard Nitrogen Purity Alarm
Specifications
Minimum Nitrogen purity | 98% |
Dew point | -40° to -70° F |
Electrical | 110 VAC, 15 AMPS |
Dimensions | 64” H x 26” W x 18” D |
Documents & Resources

N2Blast® - FPS-3250 Nitrogen Generator
FPS Series Nitrogen Generator
Handles up to 3,250 gallons of FPS sprinkler pipe capacity
UL508A Listed Industrial Control Panel
3.5” Touchscreen display (HMI) with SMART-Track technology
- Real-time status of nitrogen generator, FPS leak rate, runtime, maintenance reminders, and remote monitoring capabilities
- Ability to monitor nitrogen generator remotely via internet or app
- BlastOff™ I – Leak Detection System
- BlastOff™ II – Automatic Air Bypass Alarm
Internal refrigerated air dryer package
Minimum outlet pressure of 60 PSI
Internal (16.8) gallon nitrogen storage tank
Includes (1) Quick-Check® - Portable Nitrogen Purity Sensor per project
OPTIONAL FEATURES
Air compressor package for N2Blast feed air requirement & quick-fill operation
BlastOff™ III – Early Warning System (includes additional year warranty)
BlastOff™ IV – Onboard Nitrogen Purity Alarm
Specifications
Minimum Nitrogen purity | 98% |
Dew point | -40° to -70° F |
Electrical | 110 VAC, 5 AMPS |
Dimensions | 64” H x 26” W x 18” D |
Documents & Resources

N2Blast® - FPS-5000 Nitrogen Generator
FPS Series Nitrogen Generator
Handles up to 5,000 gallons of FPS sprinkler pipe capacity
UL508A Listed Industrial Control Panel
3.5” Touchscreen display (HMI) with SMART-Track technology
- Real-time status of nitrogen generator, FPS leak rate, runtime, maintenance reminders, and remote monitoring capabilities
- Ability to monitor nitrogen generator remotely via internet or app
- BlastOff™ I – Leak Detection System
- BlastOff™ II – Automatic Air Bypass Alarm
Internal refrigerated air dryer package
Minimum outlet pressure of 60 PSI
Internal (16.8) gallon nitrogen storage tank
Includes (1) Quick-Check® - Portable Nitrogen Purity Sensor per project
OPTIONAL FEATURES
Air compressor package for N2Blast feed air requirement & quick-fill operation
BlastOff™ III – Early Warning System (includes additional year warranty)
BlastOff™ IV – Onboard Nitrogen Purity Alarm
Specifications
Minimum Nitrogen purity | 98% |
Dew point | -40° to -70° F |
Electrical | 110 VAC, 5 AMPS |
Dimensions | 64” H x 26” W x 18” D |
Documents & Resources

N2Blast® - FPS-10000 Nitrogen Generator
FPS Series Nitrogen Generator
Handles up to 10,000 gallons of FPS sprinkler pipe capacity
UL508A Listed Industrial Control Panel
3.5” Touchscreen display (HMI) with SMART-Track technology
- Real-time status of nitrogen generator, FPS leak rate, runtime, maintenance reminders, and remote monitoring capabilities
- Ability to monitor nitrogen generator remotely via internet or app
- BlastOff™ I – Leak Detection System
- BlastOff™ II – Automatic Air Bypass Alarm
Internal refrigerated air dryer package
Minimum outlet pressure of 60 PSI
Internal (16.8) gallon nitrogen storage tank
Includes (1) Quick-Check ® - Portable Nitrogen Purity Sensor per project
OPTIONAL FEATURES
Air compressor package for N2Blast feed air requirement & quick-fill operation
BlastOff™ III – Early Warning System (includes additional year warranty)
BlastOff™ IV – Onboard Nitrogen Purity Alarm
Specifications
Minimum Nitrogen purity | 98% |
Dew point | -40° to -70° F |
Electrical | 110 VAC, 5 AMPS |
Dimensions | 77” H x 29” W x 26” D |
Documents & Resources

N2Blast® - FPS-16500 Nitrogen Generator
FPS Series Nitrogen Generator
Handles up to 16,500 gallons of FPS sprinkler pipe capacity
UL508A Listed Industrial Control Panel
3.5” Touchscreen display (HMI) with SMART-Track technology
- Real-time status of nitrogen generator, FPS leak rate, runtime, maintenance reminders, and remote monitoring capabilities
- Ability to monitor nitrogen generator remotely via internet or app
- BlastOff™ I – Leak Detection System
- BlastOff™ II – Automatic Air Bypass Alarm
Internal refrigerated air dryer package
Minimum outlet pressure of 60 PSI
Internal (16.8) gallon nitrogen storage tank
Includes (1) Quick-Check ® - Portable Nitrogen Purity Sensor per project
OPTIONAL FEATURES
Air compressor package for N2Blast feed air requirement & quick-fill operation
BlastOff™ III – Early Warning System (includes additional year warranty)
BlastOff™ IV – Onboard Nitrogen Purity Alarm
Specifications
Minimum Nitrogen purity | 98% |
Dew point | -40° to -70° F |
Electrical | 110 VAC, 5 AMPS |
Dimensions | 77” H x 29” W x 26” D |
Documents & Resources

N2Blast® - FPS-22500 Nitrogen Generator
FPS Series Nitrogen Generator
Handles up to 22,500 gallons of FPS sprinkler pipe capacity
UL508A Listed Industrial Control Panel
3.5” Touchscreen display (HMI) with SMART-Track technology
- Real-time status of nitrogen generator, FPS leak rate, runtime, maintenance reminders, and remote monitoring capabilities
- Ability to monitor nitrogen generator remotely via internet or app
- BlastOff™ I – Leak Detection System
- BlastOff™ II – Automatic Air Bypass Alarm
Internal refrigerated air dryer package
Minimum outlet pressure of 60 PSI
Internal (16.8) gallon nitrogen storage tank
Includes (1) Quick-Check ® - Portable Nitrogen Purity Sensor per project
OPTIONAL FEATURES
Air compressor package for N2Blast feed air requirement & quick-fill operation
BlastOff™ III – Early Warning System (includes additional year warranty)
BlastOff™ IV – Onboard Nitrogen Purity Alarm
Specifications
Minimum Nitrogen purity | 98% |
Dew point | -40° to -70° F |
Electrical | 110 VAC, 5 AMPS |
Dimensions | 77” H x 29” W x 26” D |
Documents & Resources
- AutoPurge System™
- Quick-Check® - Purity Manifold
- Sampling Port
- Portable N2 Purity Sensor
- Ice Plug Alert System

Patented N2Blast® - AutoPurge System™
FPS Series Accessory
Mount horizontally on vertical section of FPS piping
Complete with NPT connection, auto high pressure water shut-off, and adjustable AutoPurge System™ orifice
Fully pneumatic, no electric required
Tunable based on FPS capacity, minimizing nitrogen generator runtime
Ensures 98%+ purity throughout FPS within (2) weeks
Documents & Resources

Quick-Check® - Purity Manifold
FPS Series Accessory
Standard models: 1, 6, 10, and 20 Zone (custom models available upon request)
Deactivates each AutoPurge System™ as the nitrogen purity set point is achieved
Maintenance mode periodically monitors nitrogen purity in each Zone
Equipped with 2GB micro SD card for data extraction
Optional ethernet communication module available for remote access
Wall-mountable and complete with PLC and modules
Analog 0-10V, 4-20mA signal to BMS as purity is achieved
Electrical: 115V/60Hz/1Ph, 8 AMPS
Documents & Resources

Quick-Check® - Sampling Port
FPS Series Accessory
Offers peace of mind that nitrogen is fully blanketed throughout FPS
One or multiple Sampling Ports can be installed on any Zone which already has an AutoPurge System™
Mount horizontally on a vertical section of FPS piping
No electric required

Quick-Check® - Portable Nitrogen Purity Sensor
FPS Series Accessory
Attaches to quick connection on AutoPurge System™ or Sampling Port

Ice Plug Alert System
FPS Series Accessory
Alerts if the main branch line is completely plugged with ice (i.e. water flow to the sprinkler head is restricted)
Monitors up to (4) zones and provides feedback via dry contact to the building monitoring system
Recommended for cold storage and freezer facilities, or other facilities where the sprinkler piping is exposed to freezing temperatures
Wall mountable and complete with PLC and modules
Electrical: 115V/60Hz/1Ph, 8 AMP
- N2Blast – Corrosion Inhibiting System – Product Guide
- N2Blast – Nitrogen Generator – Brochure
- Technical Report – Black vs. Galvanized Steel under Supervisory Nitrogen
- Nitrogen Generator System Components – Overview of Technology
- Article – The Expanding Role of Nitrogen in Fire Protection
- Case Study – Pinhole Leaks within Data Center FPS
- Wholesale Pipe Replacement – Is it warranted?
- Fact or Fiction – Anaerobic MIC in Nitrogen Supervised FPS?
- Freeze Protection – Role of Supervisory Nitrogen
- FM Global – Steel Piping Material Corrosion
- FM Approvals – Nitrogen Generator Standard Nears Completion
- Backflow Preventers – Are they required for Nitrogen Supervised FPS?
- Procedure to Inhibit Sprinkler Pipe Corrosion – Recommendations
- MP Material Performance – Corrosion Innovation of the Year Award
For more information on our products, please call us today to speak with a South-Tek Systems representative: (888) 526-6284