How to prevent the influence of high temperature environment on the sealing of fire extinguisher valve

In the field of fire safety, fire extinguishers are the core equipment for initial fire fighting, and the stability and reliability of their performance are crucial. As a key component of the fire extinguisher valve, it directly affects the storage, release and fire extinguishing effect of the fire extinguishing agent. Therefore, the sealing performance of valves is particularly important in high temperature environments and faces many challenges.
The high temperature environment poses a severe test to the sealing performance of the fire extinguisher valve. Under high temperature conditions, the internal materials of the valve may undergo thermal expansion, aging and deformation, thus affecting its sealing performance. These impacts are mainly reflected in the following aspects:
Deterioration of sealing ring materials: High temperatures accelerate the oxidation of sealing ring materials, causing them to harden, become brittle, and eventually lose their original elasticity and sealing capabilities. This change significantly reduces the effectiveness of the fire extinguisher.
Deformation of the sealing surface: Thermal expansion caused by high temperature may cause the gap between the sealing surfaces to increase, thereby reducing the sealing effect and increasing the risk of fire extinguishing agent leakage.
Fluctuation of pressure inside the valve body: In a high-temperature environment, the gas pressure inside the fire extinguisher increases, exerting additional pressure on the sealing structure. This pressure will accelerate the wear of the seal and further affect the performance of the fire extinguisher.
Failure of lubricant: High temperature environment may cause lubricant to volatilize, oxidize or decompose, increasing friction between sealing surfaces, thereby affecting sealing performance.

In order to cope with the challenges of high temperature environment to the sealing of fire extinguisher valves, it is particularly important to adopt effective prevention and improvement strategies.
Material selection is key. For high-temperature environments, high-temperature-resistant and corrosion-resistant materials, such as fluororubber and silicone rubber, should be given priority. These materials can maintain good elasticity and sealing performance under high temperatures, ensuring the reliability of the valve under extreme conditions.
The optimized design of the sealing structure is also a link that cannot be ignored. By improving the sealing structure, such as increasing the thickness of the sealing ring, adopting a double sealing structure, and setting up a thermal compensation mechanism, the sealing performance of the fire extinguisher valve in high temperature environments can be significantly improved. At the same time, the gap between the sealing surfaces should be reasonably designed to prevent excessive gaps caused by thermal expansion.
Regular maintenance is also crucial. Implementing regular inspections and maintenance, including cleaning the dirt on the sealing surface, checking the integrity of the sealing ring, and lubricating the sealing surface, can effectively extend the service life of the fire extinguisher valve. In high temperature environments, the inspection and maintenance cycles should be shortened appropriately to ensure that the fire extinguisher valve is always in optimal working condition.
Reasonable storage and use are also effective means to improve the performance of fire extinguishers. In high-temperature environments, try to store the fire extinguisher in a cool, ventilated, and dry place to avoid direct sunlight and high-temperature baking. When using, follow correct operating procedures to avoid damage to the valve caused by excessive force or improper operation. In addition, pressure testing should be performed regularly to ensure that the working pressure of the fire extinguisher is within the normal range.
Finally, upskilling operators is crucial. Strengthen the training and guidance of operators, improve their fire safety awareness and operating skills, so that they can quickly and accurately use fire extinguishers to extinguish fires in emergencies, and avoid fire extinguisher failure due to improper operation.