DeOx™
Corrosion Inhibiting Solutions for Wet Fire Sprinkler Systems
Sprinkler pipe corrosion is a serious threat for organizations that rely on wet fire sprinkler systems to protect their facilities. 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 distribution centers and dormitories. 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.
As a rule, air migrates through wet sprinkler piping to the highest points of the system, where it accumulates in pockets under compression due to the water pressure in the system. These “trapped air pockets” are comprised of 20.9% oxygen, which drives the corrosion of the interior pipe wall at the air-water interface. Another contributor to the corrosion of wet sprinkler piping comes from the highly oxygenated water that fills the system. The dissolved oxygen in the fill water reacts with the steel to form a layer of corrosive black iron oxide (magnetite) along the submerged areas of the interior pipe wall. In addition, the dissolved oxygen can transfer out of the water and into the trapped air pockets, helping to sustain the corrosion reaction at the air-water interface.
South-Tek Systems’ full suite of wet system corrosion solutions offers the right level of corrosion protection for any facility. The patent pending DeOx™ – Dual Vent O2-Release System™ provides baseline defense by helping to eliminate the corrosive air-water interface along the high points of the sprinkler pipe network. To further reduce the likelihood of electrochemical corrosion, we recommend combining the Dual Vent O2-Release System™ with the DeOx™ – N2-Inert System™. The N2-Inert System™ is designed to rapidly pre-fill any wet sprinkler system with ultra-pure nitrogen gas and effectively displace up to 99.5% of the oxygen from within the system. And for maximum corrosion protection, look no further than the Patented DeOx™ – Water Deoxygenation System™. After employing N2-Inert™ technology to target the trapped oxygen at the high points of the piping network, the Water Deoxygenation System™ then removes the dissolved oxygen and harmful bacteria from the fill water prior to it entering the wet sprinkler piping. South-Tek Systems will provide high quality Nitrogen Generators for fire sprinkler systems as a a cost effective, safe, and reliable source of an unlimited supply of high purity nitrogen gas.

DeOx™ – DeOxygenation System™
N2-Inert & DeOxygenation Systems
- Easily integrates into a new or pre-existing FPS
- Targets both aerobic and anaerobic bacteria
- Filters particulates and removes impurities from the fill water
- Reduces oxygen content from 10 PPM to less than 1.0 PPM
- Water containing 1.0 PPM or less oxygen inhibits the corrosion reaction
- Eliminates the problematic oxygen-water interface
- Protects the installation and extends the life of the sprinkler piping

DeOx™ – N2-Inert System™
N2-Inert & DeOxygenation Systems
- Reduces oxygen levels within any wet FPS
- Achieves high purity N2 pre-fill within minutes
- Displaces all trapped air within a wet system with pure Nitrogen
- Reduces the air-water interface and lessens the likelihood of electrochemical corrosion developing within the sprinkler system
- Includes injection port and exhaust manifold
- Allows for up to 40 PSIG N2 fill
- Operating temperature range of 40oF – 120oF
- Fully pneumatic, no electrical required
- Easy installation and zero maintenance

DeOx™ – Single Vent O2-Release System™
Wet Air Vent Solutions
- Displaces corrosive trapped air from within the sprinkler piping
- Eliminates the air-water interface, the typical location of wet pipe corrosion
- Does not create a water trap; the valve fully drains back to FPS
- Install one (1) per high point of the FPS
- Mounts horizontally on either a vertical or horizontal section of the FPS piping
- Low clearance height allows for an easy high point install
- Not to be installed in water-sensitive area
- Clearance Height: 7.65”

DeOx™ – Dual Vent O2-Release System™
Wet Air Vent Solutions
- Patent-pending with FailSafe™ redundancy
- FailSafe™ design works as a true water stop – water will not overflow as it would with other redundant vent designs
- Water accumulation fully drains back to FPS by simply depressurizing FPS and pressing the reset button on Air Release Valve
- Lightweight design with low height clearance and only one connection to the piping makes for easy installation
- Primary Air Release Valve Failure Alarm with audible buzzer and visual LED indicator
- FM approved Air Release Valve
- Meets NFPA 13 vent requirement
For more information on our nitrogen generator products, please call us today to speak with a South-Tek Systems representative: (888) 526-6284