On Guard
Mobile or Stationary
The On Guard™ Continuous Compressed Air Foam (CCAF) System delivers dependable fire suppression in a compact footprint, providing continuous foam production for extended firefighting capability where reliability matters most.
The Challenge
When Every Second Matters, Running Out Isn't an Option.
Traditional fire suppression systems often provide only a limited discharge before needing to be recharged or replaced. In remote worksites, industrial operations, and emergency response situations, that can mean valuable time lost while a fire continues to grow.
When equipment, people, and operations are on the line, you need a solution built to protect and allow you to return to service quickly with minimal downtime and re charge cost. This Is why Knight Fire wins every time compared to other systems.
Knight Fire developed the On Guard™ system to provide continuous compressed air foam protection that helps operators respond quickly, suppress fires effectively, and minimize operational disruption.
The Solution
Continuous Protection Engineered for Real-World Performance.
The On Guard™ system combines Knight Fire's Continuous Compressed Air Foam (CCAF) technology with our proprietary biodegradable foam concentrate to create a powerful fire suppression solution that delivers exceptional coverage while using significantly less water.
Unlike conventional suppression systems, On Guard™ can spray continuously for hours when connected to an appropriate water source, making it ideal for applications where extended firefighting capability is essential.
Every system is built around the same philosophy that drives everything we do at Knight Fire: dependable protection engineered by people who understand fire.
Meet the OnGuard™ Series
Continuous Protection Engineered for Real-World Performance.
Our largest product offering at this time
OnGuard ISO™ Semi-Trailer Unit (STU) (CCAF)
Continuous Compressed Air Foam
Powerful and Ready When It Matters. The OnGuard ISO CCAF (Continuous Compressed Air Foam) (semi-trailer all-in-one mobile unit with supplied water). This is our largest Fire Suppression System. It utilizes our OnGuard FSU with dual rear-mounted hose reel attack lines and on-board water and foam storage tanks mounted to a 53’ BT built semi-trailer platform.
6300 Gallon Max water Capacity
4200 Gallon Recommended while Transporting
Stainless Steel Tank W/ Insulation
Stainless Steel Heat Tubes W/ Temperature Gauge
3" Discharge Valve
8 Point Fastening Man Lid and safety handrail
96"x 54"x 60" Enclosed OG Skid unit
Waterous Water Pump
Rotary Screw Air Compressor
Diesel Hatz Engine
Capable of 300-gallon /Minute / 18,000 Gallons /HR
20:1 Foam Expansion
Finished Foam Capacity: 360,000 gallons.
2 Ea. 300' of 1" Rigid Fire Fighting Hose w/ Hand Nozzles
Enclosed 4' x 4' x 8' Box Housing Hose Reels, Valves, and Remote Start
275- Gallon Tote KF/Fire Bull Climate Control Foam
Freeze Protection: -40
Non-Corrosive
No Shelf Life
Biodegradable
for dedicated Stationary building projects & equipment
OnGuard™ Stand Alone Unit (SAU) (CCAF)
Continuous Compressed Air Foam
System delivers high-performance continuous fire suppression in a commercial/industrial package unit design measuring 96”x54”x60”. Engineered for rapid activation, deployment, and dependable operation, it's ideal for equipment, structures, vehicles, and applications where space is limited but continuous CAF protection is required. Water not included
96"x 54"x 60" Enclosed Skid
Waterous Water Pump
Rotary Screw Air Compressor
Diesel Hatz Engine
Capable of 300 gallons /Min Pumping / 18,000 Gallons /HR
20:1 Foam Expansion
Finished Foam Capacity: 360,000 gallons.
2 Ea. 300' of 1" Rigid Fire Fighting Hose w/ Hand Nozzles
275- Gallon Tote KF/Fire Bull Climate Control Foam
Freeze Protection: -40
Non-Corrosive
No Shelf Life
Biodegradable
Simple cost-effective re-charging unlike Expensive dry chem systems
Stainless Steel hardline and dedicated nozzle systems for extinguishment.
mobile applications
ONGuard™ Trailer Unit (TTU) (CCAF)
Continuous Compressed Air Foam
Lorem Ipsum Water not Included
(1) 14'x7' Custom made Tandem axle bumper pull trailer with 5200 axles.
Waterous Water Pump
Rotary Screw Air Compressor
Diesel Hatz Engine
Capable of 300 gallons /Min Pumping / 18,000 Gallons /HR
20:1 Foam Expansion
Finished Foam Capacity: 360,000 gallons.
(1) 96"x 54"x 60" Enclosed Skid OnGuard unit
(1) 27"x 28"x 13" center additional hose storage area
(2) 27"x 27"x 42" hose reels with base frame for removal from trailer
(2) Ea. 400' of 1" Rigid Fire Fighting Hose w/ Hand Nozzle
(200' per reel plus an additional 400' ( 800' total per trailer )
275- Gallon Tote KF/Fire Bull Climate Control Foam
Freeze Protection: -40
Non-Corrosive
No Shelf Life
Biodegradable
For dedicated Stationary building projects & equipment
OnGuard™ COMPACT (OCU) (CCAF)
a smaller compact version of the original OnGuard For use with supplied or stored water. The unit can be made mobile or stationary With a footprint of 44' x 32' x 21' this unit is best suited for smaller applications where industrial FSU’s are not needed. Great Bang for the Buck option in CCAF
COMING SOON!
We will also be building an all electrical version of this unit in the future as well.
Total enclosed footprint of 44"x 32"x 21"
Centrifugal 70GPM max Water Pump
Rotary Screw Air Compressor
Honda 22HP gasoline engine
Capable of 70 gallons /Min Pumping / 4,200 Gallons /HR
20:1 Foam Expansion
Finished Foam Capacity based on concentrate tank size
Hose reel options.
Stainless Steel hardline and dedicated nozzle system options for extinguishment
Freeze Protection: -40
Non-Corrosive
No Shelf Life
Biodegradable
supplied water or stored water option
Key Benefits
Built to Help You Protect What Matters Most.
Continuous Fire Suppression
Designed to provide extended foam production for applications requiring long-duration firefighting capability.
Uses Significantly Less Water
Our proprietary foam expands at approximately 20:1, creating exceptional coverage while requiring only about 6-10 ounces of water per gallon of spray-able finished foam.
Fast Recovery After Use
Recharge quickly with lower refill costs compared to many traditional suppression systems, helping reduce downtime after deployment.
Environmentally Responsible
Knight Fire's proprietary foam is biodegradable, non-toxic, contains no PFAS ("forever chemicals"), and is non-corrosive.
Easy Cleanup
Our foam evaporates cleanly, leaving little to no residue and reducing cleanup time after use.
Built for Reliability
Engineered for demanding industrial, municipal, agricultural, and remote environments where dependable performance matters every day.
Features & Specifications
System Features
Continuous Compressed Air Foam (CCAF) technology
Proprietary biodegradable foam concentrate
Approximately 20:1 foam expansion ratio
Uses approximately 6 oz. of concentrate per finished gallon
No PFAS (forever chemicals)
Non-toxic formulation
Non-corrosive foam
Easy-to-no cleanup
Fast recharge after deployment
Durable construction for demanding environments
Applications
The On Guard™ system is ideal for:
Oil & Gas Operations
Heavy Equipment
Construction
Industrial Facilities
Utilities
Forestry
Emergency Response
Municipal Applications
Remote Worksites
Critical Infrastructure
If your operation depends on keeping equipment running and minimizing downtime, On Guard™ is designed to deliver dependable fire protection when you need it most.
Frequently Asked Questions
What is Continuous Compressed Air Foam (CCAF)?
CCAF technology continuously mixes water, compressed air, and foam concentrate during operation, allowing the system to produce high-quality firefighting foam for extended periods when connected to a water source.
How is On Guard™ different from traditional fire suppression systems?
Unlike many conventional systems that are limited by stored agent capacity, On Guard™ is designed for continuous operation, helping operators maintain fire suppression for significantly longer duration's.
Is the foam environmentally safe?
Yes. Knight Fire's proprietary foam is biodegradable, non-toxic, PFAS-free, and non-corrosive.
Does the foam damage equipment?
No. The foam is formulated to be non-corrosive and evaporates with little to no residue, making cleanup fast and helping protect valuable equipment.
What industries commonly use the On Guard™ system?
The On Guard™ system serves industries including oil and gas, industrial operations, utilities, Data centers, municipalities, forestry, agriculture, emergency response agencies, and many other applications where dependable fire suppression is critical.
Let's Build the Right Protection for Your Operation.
Every environment presents different challenges. Our team is ready to help you determine whether the On Guard™ system is the right fit for your equipment, facility, or operation.