FM-200 (HFC-227ea) Fire Suppression Cylinders: Capacity, Pressure Ratings and Technical Specifications

FM-200 fire suppression cylinders are an important part of engineered clean agent fire suppression systems used to protect suitable critical environments. When selecting an FM-200 cylinder, engineers and procurement teams need to consider more than nominal cylinder capacity. Pressure rating, permitted filling conditions, cylinder configuration, valve compatibility, and the technical requirements of the complete system must also be reviewed.

FM-200 is the commonly used name for HFC-227ea, a clean extinguishing agent used in total-flooding fire suppression systems. Depending on the protected hazard and applicable design requirements, FM-200 systems may be used in data centers, server rooms, electrical rooms, telecommunications facilities, control rooms, and other applications requiring specialized fire protection.

This guide explains FM-200 cylinder capacity, 25 bar and 42 bar pressure configurations, HFC-227ea cylinder specifications, and the main checks to complete before specifying or purchasing a fire suppression cylinder.

1. What Is an FM-200 Fire Suppression Cylinder?

An FM-200 fire suppression cylinder is a pressure vessel used to store the HFC-227ea extinguishing agent under the conditions specified for the selected system. During system operation, the agent is released through the associated valve and discharge arrangement according to the approved system design.

The cylinder works as part of a larger engineered installation that may include:

• FM-200 storage cylinders
• Cylinder discharge valves and actuators
• Pressure monitoring accessories
• Discharge hoses and manifolds
• Distribution piping and discharge nozzles
• Fire detection and release equipment

The cylinder specification must be compatible with the other components and with the approved design for the protected enclosure.

FM-200 cylinders may also appear in technical searches under terms such as HFC-227ea cylinders, clean agent cylinders, FM-200 fire cylinders, and fire suppression system cylinders. When evaluating a product, however, the exact model and technical documentation are more important than the wording used in a product listing.

2. FM-200 Cylinder Capacity and Available Sizes

Cylinder capacity refers to the internal volume of the vessel. It is not the same as the quantity of HFC-227ea agent required for a protected room or the permitted quantity that can be filled into a particular cylinder.

The required agent quantity must be established through the applicable system design method. The cylinder arrangement is then selected according to the design requirement, permitted filling conditions, cylinder specifications, and available system configuration.

FM-200 Cylinder Capacities Listed by AGNITAR

AGNITAR's product documentation includes FM-200 and FK-5-1-12 cylinder configurations with different capacities and pressure ratings.

The following are the listed TPED-certified, Pi-marked welded cylinder capacities for the relevant pressure configurations:

The available configurations depend on the cylinder type and product specification. The table should not be interpreted as confirmation that every capacity is suitable for every system or filling condition.

For procurement, confirm the exact cylinder model, capacity, maximum working pressure, permitted filling conditions, and applicable conformity documentation.

See the AGNITAR FM-200 and FK-5-1-12 cylinder product range for product information.

3. Understanding FM-200 Cylinder Pressure Ratings

Pressure rating is a key parameter when specifying an HFC-227ea fire suppression cylinder. The cylinder's maximum working pressure must be checked against the selected system configuration and the technical specifications of the associated components.

AGNITAR lists cylinder configurations with maximum working pressure ratings of 25 bar and 42 bar.

25 Bar FM-200 Cylinders

A 25 bar FM-200 cylinder should be selected only for a system configuration documented as compatible with that cylinder and its associated components.

When reviewing a 25 bar FM-200 cylinder, check:

• Maximum working pressure
• Cylinder capacity and construction
• Permitted HFC-227ea filling conditions
• Compatible discharge valve and accessories
• Relevant product and conformity documentation
• Compatibility with the approved system design

AGNITAR lists 180 L and 267 L TPED-certified, Pi-marked welded cylinders in its 25 bar cylinder range. Confirm the current product specification before placing an order.

42 Bar FM-200 Cylinders

AGNITAR lists 42 bar maximum-working-pressure welded cylinders in capacities of 16, 26, 45, 83, 120, 149, 180 and 267 L.

The cylinder must be selected according to the system configuration, permitted filling conditions, and the documented capabilities of the associated valves and components.

A 42 bar maximum working pressure rating does not, by itself, establish the discharge performance or suitability of the complete system. The cylinder and component specifications must be reviewed together with the approved design.

Bar and PSI Conversions

For technical communication, the following approximate conversions are useful:

The values are rounded conversions. Product selection must use the actual pressure rating stated in the manufacturer's documentation rather than relying solely on a rounded conversion.

Does a Higher Pressure Rating Mean Better Performance?

Not automatically. A cylinder pressure rating is only one part of the system specification.

The performance of an FM-200 fire suppression system depends on the complete engineered arrangement, including the required agent quantity, permitted filling conditions, valve configuration, piping network, nozzle selection, and applicable design criteria.

Pressure ratings should therefore be compared within the context of the specific system rather than treated as a standalone measure of performance.

For a broader discussion, see the 25 bar vs. 42 bar fire suppression systems guide.

4. Cylinder Capacity vs. HFC-227ea Agent Quantity

One of the most important considerations in FM-200 cylinder selection is the distinction between cylinder volume and extinguishing agent quantity.

Cylinder capacity describes the internal volume of the vessel. Agent quantity describes the amount of HFC-227ea required by the design or stored under the specified filling conditions.

These values are related, but they are not interchangeable.

The required agent quantity depends on the protected enclosure and the applicable design method. The final cylinder arrangement must accommodate the required quantity within the permitted filling conditions and the selected system's specifications.

A larger cylinder does not automatically mean that a system contains the correct quantity of agent. Similarly, selecting a cylinder by volume alone does not demonstrate that the design meets the applicable requirements.

Before approving an FM-200 cylinder arrangement, verify:

1. The required HFC-227ea agent quantity from the approved design calculation.
2. The cylinder capacity and permitted filling conditions.
3. The number of cylinders required for the selected configuration.
4. The maximum working pressure rating.
5. Compatibility of the valves, hoses, manifolds, and other components.
6. Consistency between the cylinder schedule, hydraulic calculations, and system drawings.

These checks help ensure that cylinder selection is consistent with the complete fire suppression system design.

5. FM-200 Cylinder Construction and Technical Specifications

Cylinder construction and technical specifications should be checked against the exact product documentation.

When evaluating an FM-200 cylinder, engineers and procurement teams should review:

• Cylinder type and construction
• Nominal capacity
• Maximum working pressure
• Permitted filling conditions
• Valve connection and compatibility
• Product identification and traceability
• Applicable conformity documentation
• Installation and storage requirements

Do not assume that cylinders of the same nominal capacity have identical dimensions, working pressure ratings, connections, or filling limits.

Where dimensions, tare weight, test pressure, or other detailed specifications are required for a project, obtain them from the current product datasheet or technical drawing. These values should not be inferred from nominal cylinder capacity.

6. FM-200 Cylinder Valves and Component Compatibility

The cylinder valve is an important interface between the stored agent and the discharge arrangement. It must be compatible with the cylinder and the system configuration specified by the manufacturer.

Depending on the system, relevant components may include the discharge valve, actuator, pressure gauge, low-pressure monitoring device, flexible discharge hose, and manifold.

When evaluating the valve and associated components, confirm:

• The exact valve model and connection
• The documented pressure rating
• Compatibility with the cylinder and agent
• The required actuation method
• Applicable monitoring accessories
• The approved system arrangement
• Availability of relevant product documentation

A component should not be selected solely because its nominal pressure rating or connection appears similar to another product. Compatibility must be established for the actual system configuration.

7. TPED Certification and Pi Marking for FM-200 Cylinders

Conformity documentation is an important part of fire suppression cylinder procurement, particularly for projects subject to applicable transportable pressure equipment requirements.

AGNITAR lists TPED-certified, Pi-marked cylinders in its relevant cylinder range. Buyers should verify the documents applicable to the exact model and intended use.

The review may include:

• Cylinder identification and traceability
• Nominal capacity and maximum working pressure
• Relevant conformity documents and markings
• Manufacturer and model information
• Applicable inspection and product records
• Compatibility with the proposed fire suppression system

The scope of a cylinder's conformity documentation should not be confused with approval of the complete fire suppression system. Each certificate or marking must be interpreted according to its applicable requirements and documented scope.

8. How to Select the Correct FM-200 Cylinder

Selecting an FM-200 cylinder begins with the system design, not with a preferred cylinder size.

Step 1: Establish the Required Agent Quantity

Determine the HFC-227ea quantity using the applicable standard and the approved design method for the selected system.

Step 2: Identify Compatible Cylinder Configurations

Review the capacities and pressure ratings documented for the system. Confirm which options are available for the required configuration.

Step 3: Verify Filling Conditions

Ensure that the required agent quantity can be accommodated within the permitted filling conditions and the manufacturer's specifications.

Step 4: Confirm Valve and Component Compatibility

Check the cylinder valve, actuator, hose, manifold, and other relevant components against the documented system arrangement.

Step 5: Coordinate the Cylinder Schedule with Engineering Documents

The final cylinder arrangement must match the approved calculations and system drawings. If the configuration changes, the relevant design documents should be reviewed and revised where required.

Step 6: Verify Documentation Before Procurement

Confirm the product datasheet, capacity, pressure rating, applicable conformity documents, and any project-specific requirements before approving the cylinder.

Following this process helps engineering and procurement teams select an appropriate cylinder configuration without relying on nominal capacity or pressure rating alone.

9. FM-200 Cylinder Procurement Checklist

Use this checklist when evaluating FM-200 fire suppression cylinders.

Technical Review

• Required HFC-227ea agent quantity has been established.

• Cylinder capacity matches the documented system configuration.

• Maximum working pressure has been verified.

• Permitted filling conditions are documented.

• Valve and accessory compatibility has been confirmed.

• The cylinder schedule matches the approved system design.

• Required technical drawings and datasheets are available.

Documentation and Procurement

• Cylinder identification and traceability are clear.

• Applicable conformity documentation has been checked.

• The exact model and configuration are identified in the quotation.

• Warranty and delivery terms are documented.

• Replacement components and support arrangements are understood.

• Any deviations from the project specification have been recorded.

This checklist supports technical review but does not replace the applicable standards, the manufacturer's documentation, or the engineering verification required for the project.

10. AGNITAR FM-200 Fire Suppression Cylinders

AGNITAR provides fire suppression equipment for FM-200 (HFC-227ea) and FK-5-1-12 applications, with cylinder configurations that vary by capacity, construction, and maximum working pressure.

For a particular project, the correct cylinder must be selected according to the required agent quantity, permitted filling conditions, pressure rating, component compatibility, and applicable conformity requirements.

Review the AGNITAR FM-200 and FK-5-1-12 cylinder product range for available configurations and technical information.

For the complete FM-200 system, visit the AGNITAR 200 FM-200 fire suppression system product page.

Frequently Asked Questions

What cylinder capacities are available for FM-200 fire suppression systems?

AGNITAR's listed TPED-certified, Pi-marked welded cylinder configurations include 180 L and 267 L options at 25 bar, and 16, 26, 45, 83, 120, 149, 180 and 267 L options at 42 bar. Confirm the current product documentation for the exact configuration required.

Are FM-200 cylinders available in 25 bar and 42 bar configurations?

AGNITAR lists cylinder configurations with maximum working pressure ratings of 25 bar and 42 bar. Available capacities vary by configuration, and the selected cylinder must be compatible with the approved system design.

What is the difference between an FM-200 cylinder and an HFC-227ea cylinder?

FM-200 is the commonly used name for HFC-227ea. In fire suppression product searches, the terms FM-200 cylinder and HFC-227ea cylinder often refer to the same agent application. The actual product specification should still be confirmed by model and documentation.

Is cylinder capacity the same as FM-200 agent quantity?

No. Cylinder capacity is the vessel's internal volume, while agent quantity is the amount required or stored under the specified filling conditions. The required quantity must be established through the approved system design method.

What does the pressure rating of an FM-200 cylinder mean?

The maximum working pressure is a specified pressure rating for the vessel. It should be checked against the system configuration and the documented capabilities of the associated components. It should not be used alone to predict system performance.

What documents should be checked before purchasing an FM-200 cylinder?

Relevant documents may include the product datasheet, cylinder specifications, pressure rating, permitted filling conditions, conformity documentation, valve compatibility information, and the cylinder schedule associated with the approved system design.

What does TPED-certified and Pi-marked mean for an FM-200 cylinder?

These terms relate to conformity and marking requirements applicable to relevant transportable pressure equipment. The documentation and markings should be verified for the exact cylinder model and intended application.

How do engineers choose the correct FM-200 cylinder?

Engineers establish the required agent quantity through the approved design method, then verify cylinder capacity, permitted filling conditions, maximum working pressure, valve compatibility, and the system configuration.

Conclusion

Selecting an FM-200 fire suppression cylinder requires more than matching a nominal capacity or pressure rating. Engineers must consider the required HFC-227ea quantity, permitted filling conditions, cylinder specifications, valve compatibility, and the complete system design.

AGNITAR's listed cylinder range includes different capacities and maximum working pressure configurations. The correct option should always be verified against current product documentation and the approved design requirements for the protected enclosure.

A documented, system-based selection process helps engineering and procurement teams specify an appropriate FM-200 cylinder configuration for their project.

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