PD 4.25 Litre AFFF Fire Extinguisher System – Mechanical or Electrical

The PD 4.25 Litre AFFF Fire Extinguisher System is an FIA-homologated motorsport fire suppression system designed for competition vehicles where an FIA-approved fire extinguisher system is required.

The system is homologated to FIA Technical List 16, EX056-19, and is specifically approved by the FIA for rally use. It is also recognised under current Motorsport UK regulations, making it suitable for UK rally competition where a Technical List 16 system is permitted or required.

Available with either mechanical or electrical activation, the PD system provides a choice of installation to suit different vehicle configurations and competition requirements.

Important: Motorsport regulations vary between championships and disciplines. Always check the regulations for your specific event before purchasing to ensure the system, extinguishant capacity and installation meet the applicable requirements.

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FIA & Motorsport UK Compliance

• FIA homologation: EX056-19
• FIA Technical List: 16
• FIA application: Rally
• Motorsport UK: Recognised under current regulations where an FIA Technical List 16 system is permitted or required
• Extinguishant: 4.25 litre AFFF
• Activation: Mechanical or electrical
• Cylinder: Lightweight stainless-steel construction
• Service life: 16 years

What does this mean for UK competitors?

If you are competing in UK rally, the PD EX056-19 system is an FIA Technical List 16 homologated system and is recognised by the current Motorsport UK regulations.

It is therefore a genuine competition-specification system rather than a general-purpose fire extinguisher.

For other disciplines, including circuit racing, you should always check the regulations of your particular championship or event before selecting a system, as the required FIA standard and Technical List can differ.

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Mechanical vs Electrical Activation

Mechanical Activation

The mechanical version uses a manual pull cable to activate the extinguisher system.

• Simple and proven mechanical operation
• Manual pull-cable activation
• Particularly suited to traditional race and rally installations
• No electrical power required for activation
• Robust and straightforward installation
• Cylinder weight: 6.21 kg

Electrical Activation

The electrical version uses an electronic activation system, allowing the extinguisher to be incorporated into a modern competition car's electrical and switch-panel setup.

• Electronic activation
• Suitable for modern competition vehicles
• Convenient dashboard or switch-panel installation
• Clean and flexible installation
• Cylinder weight: 6.04 kg

Both versions use the same 4.25 litre AFFF extinguishant and are covered by the same FIA homologation.

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16-Year Service Life

One of the major advantages of the PD system is its 16-year service life, helping to reduce the frequency with which the complete system needs to be replaced.

For example:

• Typical £225 system with a 10-year life = approximately £22.50 per year
• PD system with a 16-year life = approximately £14.06 per year

The longer service life can therefore provide a significantly lower annual cost of ownership, particularly for competitors who intend to keep their cars in competition for many years.

The system still requires regular inspection and servicing in accordance with the applicable regulations and manufacturer's requirements.

PD's stainless-steel cylinder construction can also provide servicing advantages compared with some traditional mild-steel systems, potentially reducing servicing costs over the life of the system.

Actual servicing costs vary depending on the service provider, system condition and parts required.

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Lightweight Stainless-Steel Construction

Weight matters in motorsport.

PD uses a high-strength stainless-steel cylinder design which allows the system to achieve a low overall weight without compromising its competition specification.

Unlike many traditional mild-steel extinguisher systems, PD's design does not require the same heavy internal bladder arrangement, helping reduce weight and simplify servicing.

The result is a compact, robust fire suppression system designed specifically for the demands of competition use.

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Why Choose the PD 4.25 Litre System?

• FIA Technical List 16 homologated
• EX056-19 FIA homologation
• FIA approved for rally
• Recognised under current Motorsport UK regulations where TL16 is applicable
• 4.25 litre AFFF extinguishant
• Choice of mechanical or electrical activation
• Lightweight stainless-steel cylinder
• 16-year service life
• Designed specifically for motorsport
• Suitable for the vibration and demands of competition use
• Available with replacement parts and servicing support from Race Rally Supplies

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Motorsport Applications

Particularly suited to:

• Stage rally cars
• UK rally competition
• FIA rally competition where the applicable regulations permit this system
• Competition builds requiring an FIA Technical List 16 system

Important for circuit competitors

Not every FIA extinguisher system is automatically suitable for every form of circuit racing.

Different championships can specify different FIA standards, Technical Lists, extinguishant quantities and installation requirements. If you are buying for circuit racing, endurance racing or another specific championship, check the regulations for your event or contact Race Rally Supplies before purchasing.

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Frequently Asked Questions

Is the PD EX056-19 FIA approved?

Yes. The PD 4.25 litre system is homologated to FIA Technical List 16 under homologation EX056-19.

The FIA listing specifically identifies this system as approved for rally.

Can the PD EX056-19 be used in the UK?

Yes. The system is recognised under current Motorsport UK regulations where an FIA Technical List 16 system is permitted or required.

For UK rally competition, it is an FIA-homologated option suitable for applications requiring a Technical List 16 system, subject to the regulations of the particular event or championship.

Can I use it for rally?

Yes. EX056-19 is specifically FIA-approved for rally and is recognised within the current Motorsport UK regulatory framework where the applicable requirements call for an FIA Technical List 16 system.

Can I use it for circuit racing?

Do not assume that it is suitable simply because it is FIA homologated.

Circuit racing regulations can specify different FIA Technical Lists, standards or extinguishant quantities. Check the regulations for your particular championship before purchasing.

If you tell us which championship or series you are competing in, we can help you identify the appropriate system.

What is the difference between mechanical and electrical activation?

The mechanical version is activated using a manual pull cable.

The electrical version uses an electronic activation system and can be integrated into a competition car's electrical/switch-panel installation.

Both versions use the same FIA-homologated suppression system.

How much does the system weigh?

The mechanical version weighs approximately 6.21 kg, while the electrical version weighs approximately 6.04 kg.

What type of extinguishant does it use?

The system contains 4.25 litres of AFFF (Aqueous Film Forming Foam), designed for rapid suppression of fires encountered in motorsport applications.

How long does the PD system last?

The system has a 16-year service life, subject to the manufacturer's requirements and required servicing throughout its life.

Does it still need servicing?

Yes. A long service life does not mean the extinguisher can simply be fitted and forgotten.

Motorsport fire suppression systems require periodic inspection and servicing in accordance with the applicable regulations and manufacturer's requirements.

Race Rally Supplies can provide servicing support for PD systems.

Can I buy spare parts?

Yes. We stock a range of PD extinguisher spares and replacement components.

Shop Extinguisher Spares

Do you sell additional nozzles?

Yes. We stock a range of extinguisher nozzles and related components.

Shop Extinguisher Nozzles

My extinguisher expiry date says June. When does it expire?

Where an expiry date is stated as a month and year, the system remains valid until the end of the stated month, subject to all required servicing and inspection requirements being met.

Why are PD systems lighter than some traditional steel systems?

Although stainless steel itself is not inherently lighter than mild steel, PD's cylinder design and construction allow the overall system to be manufactured with a low weight.

The design also avoids the heavy internal bladder arrangement commonly found in some traditional mild-steel systems.

This helps reduce overall vehicle weight while providing a robust cylinder designed for motorsport use.

Why can PD systems be cheaper to service?

The stainless-steel cylinder design and construction can simplify the servicing process compared with some traditional systems.

In particular, the absence of a conventional internal bladder can mean fewer components need to be replaced during servicing.

Actual servicing costs will depend on the condition of the system, parts required and the service provider.

Can Race Rally Supplies service my PD extinguisher?

Yes. Race Rally Supplies provides servicing support for PD motorsport fire suppression systems, with trained personnel and the equipment required to service applicable systems.

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Need help choosing the right system?

If you are unsure which extinguisher is required for your car, don't simply choose based on the FIA logo.

The correct system depends on your discipline, championship, vehicle and the regulations you are competing under.

If you tell us whether your car is being built for rally, circuit racing, endurance, track use or another form of competition, the Race Rally Supplies team can help you identify the appropriate extinguisher system.