Bus fire suppression systems
Deploy proven countermeasures when every second matters.
Integrated suppression hardware for transit vehicles
Detection buys time. A properly engineered suppression system puts that time to work. Troman’s bus fire suppression products combine proven extinguishing agents, compact canisters, system controllers, activation hardware, and operator controls to deliver a coordinated response when a fire or serious thermal condition is detected.
Designed for demanding transit environments, these systems can be configured around specific vehicle layouts, propulsion systems, and high-risk zones. Integrated controls can also support broader emergency protocols, including audible and visual alarms, equipment shutdown, engine derating, hazard-light activation, and passenger evacuation. The result is a complete suppression strategy built to limit fire growth, reduce damage, and protect people and surrounding assets.
Troman bus fire suppression systems integrate extinguishing agents, canisters, controllers, and activation hardware to help contain fires, protect passengers, and reduce damage to transit vehicles and facilities.
Interrupt the fire chemistry fast.
High-performance suppression for flammable-liquid and electrical hazards
Troman uses Purple K, a potassium-bicarbonate dry chemical, to suppress the Class B and Class C hazards common in vehicle engine and equipment compartments. The agent interrupts the fire’s chemical chain reaction and contributes to cooling at the flame and hot surfaces.
Because Purple K does not rely on water, it avoids the spreading concerns associated with applying water to flammable liquids and the electrical-conductivity concerns around energized equipment. It is packaged within Troman extinguishers engineered for specific compartment volumes.
Troman Purple K fire suppression uses a potassium-bicarbonate dry chemical to interrupt Class B flammable-liquid and Class C electrical fires in bus engine and equipment compartments.
Selected for the hazards found in vehicle compartments
Target the fuel and electrical risks without adding water.
Engine oil, fuel, hydraulic fluid, lubricants, and energized components create a different suppression challenge than ordinary combustibles. Purple K is recognized for rapid effectiveness on flammable-liquid and gas fires.
The agent is one part of the system
Nozzles, quantity, coverage, detection, and activation determine performance.
A suppression design must match agent quantity, distribution, protected volume, airflow, component layout, and detection logic. Troman engineers the agent together with the extinguisher, piping, nozzles, controls, and vehicle response.
Key capabilities
Potassium-bicarbonate dry chemical
Class B flammable-liquid suppression
Class C energized-electrical suppression
Rapid chemical-chain interruption
Packaged in multiple Troman extinguisher sizes
Compatible with automatic and manual activation
Integrated with Troman detection and control products
Match the suppression agent to the actual hazard.
Troman can evaluate protected volume, fuel and electrical risks, discharge layout, detection, and activation as one coordinated system.
Compact suppression for smaller vehicle hazard zones.
Seven kilograms of Purple K for compartments up to 3 m³
The Troman small-bus extinguisher is an 8-liter vessel containing 7 kg of Purple K dry chemical pressurized to 24 bar. It is designed to protect engine compartments and other vehicle hazard zones with volumes up to 3 m³.
The extinguisher is supplied in a vertical orientation with mounting hardware and a choice of standard or electronic pressure gauge. An electronic gauge can provide a low-pressure signal to the operator or controller.
The Troman small-bus extinguisher provides 7 kg of Purple K dry chemical suppression for transit vehicle engine compartments and hazard zones up to 3 m³.
Size the extinguisher to the protected volume
Use the compact vessel where the hazard and compartment allow it.
Smaller buses, paratransit vehicles, and focused equipment zones may not require the mass or packaging of a large extinguisher. The correct design still depends on enclosure volume, airflow, nozzle placement, fuel sources, and applicable standards.
Monitor pressure as part of system readiness
Choose a visual or electronic gauge configuration.
Gauge orientation options support installation visibility, while an electronic gauge can provide a low-pressure warning through the system. Scheduled inspection and service remain part of the protection plan.
Key capabilities
8-liter vessel
7 kg Purple K at 24 bar
Protection for hazard zones up to 3 m³
Vertical installation
Standard or electronic pressure gauge
Multiple gauge orientations
Wall- or floor-mounted bracket
DOT, Transport Canada, and TPED approvals listed by Troman
Protect the smaller compartment without oversizing the hardware.
Troman can confirm protected volume, extinguisher sizing, nozzle layout, bracket orientation, detector strategy, and control integration.
Suppression configured for UNECE R107 compartment volumes.
An 8.5 kg Purple K vessel with flexible installation options
The Troman UNECE R107 extinguisher is a 9.8-liter vessel containing 8.5 kg of Purple K dry chemical at 24 bar. It is designed for vehicle engine compartments and other fire-risk zones within the published UNECE R107 volume range.
Vertical and horizontal configurations, mounting-bracket options, and standard or electronic pressure gauges give vehicle builders and fleets flexibility in packaging the system.
The Troman UNECE R107 extinguisher provides 8.5 kg of Purple K dry chemical suppression for qualifying bus engine compartments and can be installed vertically or horizontally.
Designed around a defined protection standard
Match the complete installation—not only the vessel—to the requirement.
Compliance depends on the system architecture, protected volume, discharge performance, detector strategy, installation, and documentation. Troman can support system selection and integration for the relevant vehicle program.
Packaging options for bus architecture
Orient the vessel and gauge for service access.
The extinguisher can be supplied for vertical or horizontal placement with wall- or floor-mounted brackets. Gauge orientation options help maintain visibility regardless of installation direction.
Key capabilities
9.8-liter vessel
8.5 kg Purple K at 24 bar
Designed for published UNECE R107 compartment volumes
Vertical or horizontal installation
Standard or electronic pressure gauge
Multiple gauge orientations
Wall- or floor-mounted bracket
DOT, Transport Canada, and TPED approvals listed by Troman
Integrate R107 suppression into the vehicle design.
Troman can review compartment volume, installation orientation, discharge coverage, detection, controls, and documentation for the application.
More agent capacity for larger vehicle hazard zones.
An 11.4 kg Purple K vessel for compartments up to 10.1 m³
The Troman large-bus extinguisher is a 13.1-liter vessel containing 11.4 kg (25 lb) of Purple K dry chemical at 24 bar. It is designed to protect large vehicle engine compartments and other hazard zones within the published volume range.
The extinguisher can be installed vertically or horizontally and supplied with a standard or electronic pressure gauge. Multiple gauge orientations and wall- or floor-mounted brackets support packaging and service access.
The Troman large-bus extinguisher provides 11.4 kg of Purple K dry chemical suppression for engine compartments and vehicle hazard zones up to 10.1 m³.
Capacity for the large compartment
Agent quantity and distribution must match the actual geometry.
Larger engine and equipment areas require sufficient agent mass and a discharge network designed to reach the relevant surfaces and volumes. Air movement, shielding, compartment openings, and nozzle placement all affect the system design.
Pressure monitoring supports readiness
Use an electronic gauge when the fleet needs a remote low-pressure signal.
The gauge can be oriented for service visibility, and electronic monitoring can bring a low-pressure condition to the operator or controller rather than waiting for a manual inspection to discover it.
Key capabilities
13.1-liter vessel
11.4 kg (25 lb) Purple K at 24 bar
Protection for hazard zones up to 10.1 m³
Vertical or horizontal installation
Standard or electronic pressure gauge
Multiple gauge orientations
Wall- or floor-mounted bracket
DOT, Transport Canada, and TPED approvals listed by Troman
Protect the large hazard zone with a complete system.
Troman can engineer the extinguisher, nozzles, distribution, detection, controls, mounting, and service strategy around the vehicle.
Portable lithium-ion fire protection.
React to battery fires quickly on vehicles or in the garage.
The F-500 EA® Fire Extinguisher provides unmatched incipient fire protection and flammable spill control in a small package. This stainless steel unit is effective on a variety of hazards, including polar and non-polar fuels. A single charge can encapsulate a half-gallon spill in minutes. Applications include:
Class A Hazards: Common Materials
Class B Hazards: Flammable Liquids
Class D Hazards: Combustible Materials
Class K Hazards: Oils and Fats
Lithium-ion Hazards: Rechargeable Devices
For unmatched versatility, we recommend our Misting Nozzle (MN), and for expert Class A applications that demand a greater distance, our Straight Bore (SB) is ideal.
The F-500 EA® Fire Extinguisher is sold unfilled. F-500 EA® Recharge Kits are sold separately. For refilling F-500 EA® Fire Extinguishers in bulk, use a 5-gallon pail of F-500 EA®.
Nominal Measurements:
Capacity: 9.5L (2.5F)
Dimensions: 571.5 × 178mm (22.5 × 7in)
Weight: 3.4kg (7.5lb)
Working Pressure: 10 bar (150 psi)