What is the effect of the valve structure of CO2 fire extinguisher valve on the sealing performance

In the fire protection industry, carbon dioxide (CO2) fire extinguishers are widely recognized for their efficient and rapid fire extinguishing capabilities. The overall performance of a fire extinguisher depends not only on the fire extinguishing agent filled inside, but also on the design and manufacturing quality of key components such as valves. In particular, the valve structure plays a decisive role in the sealing performance of the fire extinguisher.

The impact of valve structure on sealing performance
The valve structure is the core component of a CO2 fire extinguisher, and its design directly affects the sealing performance of the valve. The main components of the valve include key components such as the valve body, valve stem, valve disc and sealing gasket. The matching and connection methods between these components determine whether the valve can effectively prevent the leakage of the fire extinguishing agent when it is closed.
The design of the valve body is crucial. The valve body is usually made of high-strength, corrosion-resistant materials to ensure that it can withstand the pressure and corrosion of the fire extinguishing agent. In addition, the internal structure of the valve body needs to be precisely machined to ensure a close fit between the components. In particular, the matching between the valve disc and the valve seat, its precision and finish directly affect the sealing performance.
The design of the valve stem is equally important. As a key component connecting the valve disc and the operating handle, the material and manufacturing process of the valve stem must meet the requirements of high strength, corrosion resistance and wear resistance. At the same time, the matching mode between the valve stem and the valve body must also be carefully designed to ensure that the valve stem can move stably and reliably during operation, so as to effectively drive the valve disc to open and close.

Valve structure optimization and sealing performance improvement
In order to improve the sealing performance of CO2 fire extinguisher valves, manufacturers usually optimize the valve structure. These optimization measures include:
Application of double sealing structure: Add an additional layer of sealing gasket between the valve disc and the valve seat to significantly improve the sealing effect. This design can effectively prevent leakage problems caused by aging or damage of a single sealing gasket, and ensure the reliability of the fire extinguisher after long-term use.
Optimization of sealing gasket material: Select sealing gasket materials with excellent corrosion resistance, high temperature resistance and low temperature resistance to ensure that they can still maintain good sealing performance in various harsh environments. This measure not only enhances the durability of the product, but also improves the overall safety.
Increase in sealing surface width: By increasing the contact area between the valve disc and the valve seat, the specific pressure of the sealing surface is increased, thereby enhancing the sealing effect. This design can effectively reduce the risk of leakage caused by wear of the sealing surface and extend the service life of the product.
Adoption of elastic valve seat: elastic elements such as springs or rubber pads are set on the valve seat to compensate for the deformation of the sealing surface caused by temperature changes or pressure fluctuations. This design ensures that the valve can maintain good sealing performance under various working conditions and improves the reliability of the fire extinguisher.