In fire protection systems, especially in demanding environments such as industrial kitchens, every component plays a critical role. Among them, valves for extinguishers and cylinders
are key elements to ensure an efficient, controlled, and safe discharge of the extinguishing agent.
Their correct design, selection, and installation not only affect system performance but are also directly linked to compliance with current regulations.
What is the function of valves in extinguishers and cylinders?
A fire extinguisher works as a pressurized container that releases an extinguishing agent through a valve. This mechanism allows the system to be activated and directs the discharge toward the source of the fire.
In automatic systems —such as those used in professional kitchens— valves perform even more advanced functions:
- Control the release of the extinguishing agent.
- Ensure the cylinder’s tightness.
- Activate manually or automatically.
- Integrate with thermal detection systems.
Therefore, they are not just an accessory: they are a critical component for the effectiveness of the system.
Types of valves in fire suppression systems
Depending on the type of installation and the extinguishing agent, different types of valves can be found:
1. Manual valves
They allow direct activation by the user. They are commonly used in portable fire extinguishers.
2. Automatic valves
They are activated through detection systems (temperature, thermal fuses, or electrical signals), very common in industrial kitchens.
3. Safety valves
Designed to prevent overpressure in the cylinder, protecting both the equipment and the user.
4. Directional valves
They regulate the distribution of the extinguishing agent toward specific nozzles in complex systems.
Safety criteria for fire suppression valves
To ensure maximum reliability, valves must meet a series of technical requirements:
- Pressure resistance: Cylinders and their valves must withstand high pressures and undergo periodic hydraulic testing to prevent structural failures.
- Total tightness: Any leak compromises system effectiveness. Valves must ensure perfect sealing throughout their entire lifespan.
- Certified materials: Materials resistant to corrosion, high temperatures, and chemical agents are used.
- Compatibility with the extinguishing agent: Not all valves are suitable for all agents (powder, CO₂, foam, or wet chemical in kitchens).
- Reliable activation: In automatic systems, the valve must activate without failure under critical conditions.
Applicable regulations in Spain and Europe
The design and use of valves in extinguishers and cylinders are regulated by a comprehensive framework that ensures system safety and effectiveness.
Fire Protection Systems Regulation (RIPCI)
Royal Decree 513/2017 establishes the requirements for the design, installation, and maintenance of fire protection equipment in Spain.
This regulation requires:
- Certified equipment compliant with European regulations.
- Mandatory periodic inspections.
- Maintenance by authorized companies.
UNE-EN 3 Standard (portable extinguishers)
It defines construction, resistance, and performance requirements for fire extinguishers, including aspects related to valves and discharge mechanisms.
Specific regulations for kitchens: UNE 23510 and UNE-EN 17446
In the case of industrial kitchens, where the risk is higher due to the presence of grease and high temperatures, the following standards stand out:
- UNE 23510: regulates automatic fire suppression systems in kitchens.
- UNE-EN 17446: establishes requirements for the design, installation, testing, and maintenance of these systems.
These standards require:
- Comprehensive protection (hoods, ducts, equipment).
- Reliable components, including valves.
- Systems capable of acting automatically and effectively.
Maintenance standards (UNE 23120)
Periodic maintenance includes checking the condition of valves, pressure, and tightness, with quarterly and annual inspections, as well as testing every five years.
Importance of valves in kitchen fire suppression systems
In professional kitchens, fires usually originate from oils and grease (Class F fires), which requires highly specialized systems.
Valves in these systems must:
- Activate automatically at high temperatures.
- Ensure uniform discharge of the chemical agent.
- Prevent re-ignition of the fire.
- Integrate with gas or electrical shut-off systems.
Additionally, regulations require periodic inspections and system adaptation if the kitchen configuration changes.
How to choose the right valves for your system
When selecting valves for extinguishers or cylinders, it is essential to consider:
- Type of installation (manual or automatic).
- Applicable regulations for the sector.
- Compatibility with the extinguishing agent.
- European certifications (CE marking).
- Environmental conditions (temperature, humidity, grease).
An incorrect choice can compromise system effectiveness and legal compliance.
Final key points on safety valves in fire suppression systems
Valves for extinguishers and cylinders are much more than a technical component: they are a key element in fire safety.
Their proper selection, installation, and maintenance ensure:
- The effectiveness of the fire suppression system.
- The safety of people and property.
- Compliance with current regulations.
In critical environments such as industrial kitchens, having certified systems and high-quality components is essential for real and effective protection.