What role does the Dry Valve play in a fire extinguisher?

The basic structure of the Dry Valve includes the main components such as the valve body, valve stem, valve core and sealing ring. These components work together to ensure that the dry powder fire extinguishing agent can be released efficiently and accurately to the fire source. The specific functions are as follows:

Control the release of fire extinguishing agent: The core function of the Dry Valve is to control the release of fire extinguishing agent. By operating the valve stem, the user can open or close the valve core to adjust the flow of dry powder fire extinguishing agent. The precise design of the valve core allows the fire extinguishing agent to be released quickly when needed, and the spraying is stopped quickly after the fire extinguishing operation is completed to avoid waste.

Ensure the spraying effect of the fire extinguishing agent: The design of the Dry Valve must not only ensure the effective release of the fire extinguishing agent, but also ensure the uniformity of the spraying effect. The structure of the valve core determines the spraying range and intensity of the fire extinguishing agent, affecting whether the fire extinguishing agent can evenly cover the fire source, thereby improving the fire extinguishing efficiency.

Prevent leakage: The sealing ring is an important part of the Dry Valve, responsible for preventing the fire extinguishing agent from leaking when the valve is closed. High-quality sealing rings can effectively isolate dry powder from the external environment and maintain the safety and reliability of the fire extinguisher.

The working principle of the Dry Valve involves multiple steps. The following is a detailed operation process:

Open the valve: At the beginning of the fire extinguishing operation, the user needs to rotate or push the valve stem to move the valve core away from the valve body. The operation of the valve stem requires a certain torque to ensure that the valve core can be stably opened. The channel in the valve body will be opened to allow the dry powder fire extinguishing agent to pass through.

Adjust the flow: The design of the valve core enables it to accurately control the flow of dry powder. By adjusting the opening and closing degree of the valve core, the user can control the spray range and intensity of the fire extinguishing agent, so as to effectively extinguish different types of fires.

Spray dry powder: After the valve is opened, the dry powder fire extinguishing agent will be sprayed onto the fire source through the channel of the valve body. The spraying of dry powder needs to evenly cover the fire source to quickly extinguish the flame. The design of the valve core ensures the uniformity and effectiveness of the spraying.

Close the valve: After the fire extinguishing operation is completed, the user rotates or pushes the valve stem in the opposite direction to make the valve core close the channel again. The good fit of the sealing ring can effectively prevent the leakage of the fire extinguishing agent and maintain the function and safety of the fire extinguisher.

In order to ensure the effectiveness of the dry powder fire extinguisher, the design of the Dry Valve needs to pay attention to the following aspects:

High sealing: The quality of the sealing ring directly affects the sealing performance of the Dry Valve. High-quality sealing rings can effectively prevent the leakage of fire extinguishing agents, thereby ensuring the long-term and stable use of the fire extinguisher.

Convenient operation: The design of the valve stem should ensure the ease of operation. In an emergency, the operator needs to operate the Dry Valve quickly and accurately, so the feel and operating torque of the valve stem need to be carefully designed.

Durability: The Dry Valve needs to withstand the high pressure and friction of the fire extinguishing agent, so the material selection of the valve body and valve core is very important. Durable materials can extend the service life of the Dry Valve and reduce the frequency of maintenance and replacement.

Accurate flow control: The design of the valve core should achieve accurate control of the dry powder flow. By rationally designing the structure of the valve core, it can ensure that the spraying effect of the fire extinguishing agent is optimal, thereby improving the efficiency of fire extinguishing.