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Portable fire extinguishers

Portable first-response equipment; type and capacity are set through risk assessment.
Explore the fire extinguisher components
Explore ceiling components and how they work
Explore the design and installation guide

EXPLORE THE COMPONENTS

Every component has a purpose.

Explore the main components of a stored-pressure ABC powder extinguisher and the qualities to consider. The illustrations are representative; component geometry and materials vary by model.

An ABC powder fire extinguisher with a red cylinder, operating lever, pressure gauge and black discharge hose.
ABC powder fire extinguisher

A flow from the cylinder to the nozzle.

The dip tube carries the extinguishing agent from the cylinder to the valve. When the operating lever opens the valve, the agent is directed through the hose and nozzle. These components work together as an assembly.

This guide covers an ABC powder extinguisher with a pressure gauge. CO₂ extinguishers use a different valve and discharge arrangement; their charge is checked by weight.

Representative view of a red extinguisher cylinder with the valve removed and its neck opening visible.
Representative component illustration

Pressure cylinder

The cylinder contains the extinguishing agent and propellant gas. The neck at the top provides the connection to the valve.

What to look for in quality
Cylinder strength, the neck connection, corrosion protection and the model’s pressure tests.
Representative view of a brass-colored valve body, threaded base, red carrying handle and operating lever.
Representative component illustration

Valve and operating lever

The carrying handle supports the extinguisher while the upper operating lever opens the valve. The valve controls the release of the extinguishing agent.

What to look for in quality
Smooth lever and hinge movement, model-compatible seals and threads, and a leak-tight valve-to-cylinder connection.
Reference-based close view of a pressure gauge with a brass-colored hexagonal bezel, white dial, red and green sectors and its needle in the green sector.
Representative component illustration

Pressure gauge

The gauge provides a visual indication of internal pressure. A needle in the operating range does not, on its own, show how much powder remains.

The dial follows the supplied visual reference. The selected extinguisher’s pressure rating is verified from its own label and data sheet.

What to look for in quality
A legible needle and operating range, the correct gauge for the model and a leak-tight connection.
Reference-based representative close view of a metal ring safety pin beside a yellow barbed plastic tamper seal with an ÖZK stamp on its round head.
Representative component illustration

Safety pin and tamper seal

The safety pin prevents accidental lever operation. The tamper seal helps indicate whether the pin has previously been removed.

Yellow round-head tamper seal stamped ÖZK beside a metal safety pin.

What to look for in quality
A properly fitting, removable pin, an easy-to-grip ring and a visibly intact tamper seal.
Representative view of a flexible black hose with a metal connector and a narrow powder discharge nozzle.
Representative component illustration

Hose and nozzle

The flexible hose carries the agent from the valve to the discharge outlet. The nozzle directs the discharge; its shape and connection depend on the extinguisher type.

What to look for in quality
An unobstructed, crack-free hose, secure connections and a hose-and-nozzle assembly compatible with the model.
Representative view of a long white dip tube with its open lower end and upper connection visible.
Representative component illustration

Dip tube / siphon tube

The dip tube extends inside the cylinder from the valve towards the bottom. It forms the internal passage that carries the agent to the valve.

What to look for in quality
The correct length and connection for the extinguisher, a clear passage and an undamaged tube, checked during qualified servicing.

INSIDE THE CEILING UNIT

Detects heat, discharges downwards.

A ceiling extinguisher carries its agent in its own vessel. Explore the body, ceiling mount and heat-sensitive discharge head separately. This mechanical guide is representative; powder and foam models can differ in agent and head arrangement.

A ceiling extinguisher secured by a top plate, with a wide rounded red vessel and a heat-sensitive head underneath.
Supporting mount above, heat-sensitive discharge head below.

Why a wide body and a head underneath?

A wide, shallow vessel provides a compact ceiling arrangement. Its rounded form relates to pressure-vessel construction. The lower head is exposed to rising heat and directs agent towards the protected area; the actual distribution is established through model-specific testing.

How does it work?

  1. Heat reaches the head

    The thermal element responds to a temperature rise around it; it does not operate as a smoke detector.

  2. The sealed outlet is released

    The special liquid inside the thermal glass bulb expands with heat. A red bulb has a nominal activation temperature of 68 °C; the broken bulb releases the outlet.

  3. Agent is distributed

    Vessel pressure drives agent through the discharge head. The outlet and deflector shape the direction of the flow.

ABC powder options

The vessel contains dry chemical powder. Powder composition, charge quantity and discharge arrangement are assessed with the selected product’s technical information.

Foam options

The vessel contains a foam extinguishing solution suitable for the model. Foam blanketing and water-based cooling depend on the agent; the head need not be identical to a powder model’s.

Schematic cutaway of a red ceiling vessel with light-coloured powder below, gas space above and a discharge head underneath.

Schematic ABC powder example; internal geometry and fill level are not to scale.

Vessel and contents

In a stored-pressure example, the vessel contains agent and propellant gas. The cutaway schematically illustrates an ABC powder example.

Why this shape or arrangement?
The shallow, wide, rounded vessel suits a ceiling arrangement; its shape alone does not indicate capacity or pressure.
What matters when selecting the component?
Vessel integrity, coating, a model-compatible charge and documented vessel tests.
Representative close view of a red mounting plate secured beneath concrete with four fixings and the unit’s upper neck connection.

Representative component illustration

Ceiling plate and supporting connection

The upper plate transfers the unit’s weight to the mounting surface. The neck and connections support the vessel below the plate.

Why this shape or arrangement?
The plate’s fixing points spread the load into the mounting surface. Supporting the unit from above leaves its lower discharge head exposed.
What matters when selecting the component?
The supporting surface, appropriate fasteners and the mounting position specified for the product.
Representative ceiling head with an intact glass bulb inside a metal frame, sealed outlet above and deflector below.

Representative component illustration

Heat-sensitive release element

This component is a thermal glass bulb. Its special heat-sensitive liquid expands to break the bulb and open the sealed outlet. A red liquid-filled bulb has a nominal activation temperature of 68 °C.

Why this shape or arrangement?
The slender, exposed bulb is subject to surrounding heat. The metal frame aligns the bulb with the outlet assembly.
What matters when selecting the component?
An undamaged bulb and a model-compatible thermal element. Activation temperature is verified from the head and product data sheet.
Representative underside close view of a ceiling extinguisher’s metal deflector plate and head frame.

Representative component illustration

Outlet and distribution head

Agent leaving the open outlet is directed by the head geometry. In an example with a deflector plate, the plate helps spread the flow.

Why this shape or arrangement?
The plate’s edge shape affects flow direction. Protected area cannot be calculated from the plate’s appearance or the vessel diameter alone.
What matters when selecting the component?
An unobstructed outlet, undamaged head and a distribution arrangement verified for the selected agent.

Design and installation guide

Fire extinguishers: selecting the agent, capacity and position for the hazard

Fire extinguishers are selected for suitable fires at an early stage. Selection depends on the burning material, the extinguisher’s labelled rating, capacity, environment and user training.

Özkartay’s ABC dry powder, CO₂ and foam extinguishers serve different needs. Portable, wheeled and ceiling-mounted variants are assessed against their own operating conditions; capacity alone does not establish suitability.

01

Five checks for extinguisher selection

Consider response equipment together with the facility’s risk assessment and evacuation plan.

  1. Fire class and electrical hazard

    In EN classification, A refers to solids, B to flammable liquids and C to flammable gases. Assess suitability for energised electrical equipment separately; class letters can differ between standards systems.

  2. Agent compatibility

    Consider powder residue, foam compatibility with the fuel and exposure from CO₂ in enclosed spaces. Special risks such as cooking oils or metals require equipment rated for the relevant fire class.

  3. Capacity and use arrangement

    Assess portable weight and wheeled-unit access with the intended user. All foam devices in the catalog are specified in LT (litres); litres and kilograms are different capacity measures.

  4. Position and visibility

    Position units where they are accessible, visible and coordinated with escape arrangements. Check for access blocked by storage, locked rooms or equipment during site inspections.

  5. Labels, maintenance and records

    Match agent, capacity, conformity documentation and maintenance records to the selected model. Inspect the vessel, discharge hardware and any fitted seals or indicators. Özkartay CO₂ devices have no pressure gauge; charge is checked by weight. Ceiling devices also require checks on the thermal glass bulb and fixed mounting.

02

ABC, CO₂ and foam options

Verify agent selection against the approved uses on the extinguisher label.

ABC dry powder

Application
Catalog ABC models are offered for A, B and C risks. For electrical hazards, follow the label and technical documentation.
Environmental effect
Assess powder residue in relation to sensitive equipment, visibility and clean-up needs.

Carbon dioxide (CO₂)

Application
Consider as a residue-free option around electrical and electronic equipment; check the model label for its fire rating.
Safe use
Account for CO₂ exposure in enclosed spaces and cold discharge components. Use and maintenance follow the selected model’s instructions.

Foam extinguishers

Application
Assess AFFF, AFFF-AR, synthetic or fluorine-free (NFF / F3) options for the liquid involved; match agent, proportioning and device compatibility to the product documentation.
Limitations
Do not assume foam is suitable for every fuel or energised electrical equipment. Cooking-oil hazards require an approved solution for that risk rather than a general Class B foam unit.

03

Extinguisher planning by facility use

Agents are not automatic substitutes for one another; assess different spaces in the facility separately.

Workshops and production

Risk
Solid materials, flammable liquids and electrical equipment may coexist.
Selection approach
Select agents against the material inventory and labelled ratings; plan access and working space for wheeled units.

Offices, IT and electrical rooms

Risk
Electronic equipment and sensitivity to powder residue.
Selection approach
Assess electrical suitability and residue together; consider ventilation and personnel exposure when choosing CO₂.

Spaces using flammable liquids

Risk
Response needs vary with fuels and solvents.
Selection approach
Match foam type to the fuel. Include open or enclosed conditions, quantities and the response plan in capacity selection.

Ceiling-mounted applications

Risk
Mounting height and the local protected hazard.
Selection approach
Select ceiling-mounted units against their own documentation and activation conditions; plan building sprinkler protection and other protection layers separately.

04

Agent selection comparison

Scroll the table horizontally to view every column.

Agent selection comparison
Agent / arrangementNeed consideredCheck required
ABC powderA / B / C risks covered by the labelResidue and user conditions
CO₂Suitable electrical and liquid risksLabel, exposure and maintenance
FoamCompatible flammable-liquid hazardFuel / concentrate compatibility
Ceiling mountedDefined local applicationMounting and activation conditions

Extinguisher use requires training and a safe escape route. If the fire grows or intervention is unsafe, prioritise the alarm, evacuation and professional assistance.

The right extinguisher is selected for the hazard, kept accessible and supported by maintenance records. Establish the space, agent and operating conditions before quotation.

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