Hello, Welcome to Sunroom Fire Safety Manufacturing Official Website!
SUNROOM
Alarm valve working principle and function introduction
Release time:
2024-07-17 13:43
**Alarm Valve Working Principle and Function Introduction**
I. In the fire protection system, the alarm valve plays a vital role. It is not only a key device for controlling water flow, but also an important device for issuing alarm signals to ensure a timely response to fires. This article will detail the working principle and function of the alarm valve to help readers better understand and apply it.
II. Working Principle of the Alarm Valve The working principle of the alarm valve is based on its internal structure and control system. When the system detects a fire or other emergency, the alarm valve will respond quickly, controlling the opening and closing of the valve to regulate the flow direction and flow rate of water.
1. **Working Principle of the Wet Alarm Valve** Wet alarm valves are typically used in places where the ambient temperature is between 4℃ and 70℃. Under normal conditions, the pipe network is filled with pressurized water, and the valve flap is closed. When a fire occurs, the sprinkler head activates and sprays water, causing a drop in pressure in the pipe network. The valve flap opens, and the system begins to spray water to extinguish the fire. At the same time, a small amount of water flows to the alarm pipe, driving the hydraulic bell and pressure switch to emit an audible and visual alarm signal, and starting the sprinkler pump to pressurize the water supply.
2. **Working Principle of the Dry Alarm Valve** Dry alarm valves are suitable for places with low ambient temperatures or where direct water extinguishing is not suitable, such as cold storage and underground parking garages. In the standby state, the system pipe network is filled with compressed air, sealing the fire pressure water on the water supply side. When a fire occurs, the sprinkler head activates, and the compressed air in the pipe network is quickly discharged. The valve flap opens under the pressure difference, and pressurized water enters the water supply pipe to extinguish the fire. Similarly, at the same time that the alarm valve opens, the hydraulic bell and pressure switch will also activate, issuing an alarm signal and starting the fire equipment.
3. **Working Principle of the Pre-action Alarm Valve** The pre-action alarm valve combines fire detection and alarm technology with an automatic sprinkler system. In the system's standby state, the pipe network is waterless but contains pre-charged gas pressure. When a fire occurs, the fire detector sends an alarm signal, and the control device opens the exhaust valve, releasing the compressed air from the pipe network, and water enters the pipe network for fire extinguishing. The pre-action alarm valve has functions such as preventing false spraying, rapid opening when a fire occurs, mechanical alarm from the hydraulic bell, and the pressure switch providing a pump start signal.
4. **Working Principle of the Deluge Alarm Valve** Deluge alarm valves are mainly used in places requiring rapid, large-area fire extinguishing. When a fire occurs, the deluge alarm valve quickly opens the sprinkler heads, spraying extinguishing water like rain to quickly cover the fire source and extinguish the fire. The pipe network on one side of the deluge alarm valve system is usually an empty pipe or filled with a static water column, which is different from the pipe network on one side of the wet alarm valve system being filled with pressurized water.
III. Function Introduction of the Alarm Valve The alarm valve has multiple functions in the fire protection system:
1. **Control Water Flow**: The alarm valve controls the opening and closing of the valve to regulate the flow direction and flow rate of water, ensuring that fire extinguishing water can be supplied to the fire scene according to the predetermined path and flow rate.
2. **Issue Alarm Signals**: When a fire occurs, the alarm valve will drive the hydraulic bell and pressure switch to issue audible and visual alarm signals, promptly notifying personnel to evacuate and start fire equipment.
3. **Start Fire Equipment**: The alarm valve directly starts fire pumps and other fire extinguishing equipment through the electrical signal from the pressure switch, ensuring that the fire is controlled promptly and effectively.
4. **Prevent False Spraying**: Alarm valves such as pre-action alarm valves have the function of preventing false spraying, ensuring that the sprinkler system will not be accidentally activated in non-fire situations.
IV. Conclusion As an important component of the fire protection system, the working principle and function of the alarm valve are of great significance to ensuring the safety of human life and property. By thoroughly understanding the working principle and functional characteristics of the alarm valve, we can better apply and maintain the fire protection system and improve fire prevention capabilities.
Next
Related News
Dragon Boat Festival Holiday Notice
Our office will be closed for the Dragon Boat Festival holiday from June 8–10, 2026, and will resume on June 11, 2026. Response times may be delayed during this period.
Our office will be closed from May 1 to May 5, 2026 for Labor Day. Responses may be slightly delayed during this period.
If you are looking for a Swing Arm Fire Hose Reel for industrial or commercial use, this article provides a brief overview of its structure, components, and typical applications For detailed specifications or quotation information, please feel free to contact our team.
In daily life, fire, as a sudden and highly destructive disaster, constantly threatens our lives and property. Mastering the correct fire extinguishing knowledge and action guidelines is crucial for controlling the fire and minimizing losses in a timely manner. This guide aims to provide you with a concise and practical set of fire extinguishing procedures to help you respond quickly and effectively to fires in critical moments.
The principle and application of sprinkler heads
Sprinkler heads, as widely used devices in daily life and industry, are indispensable auxiliary tools due to their working principles and diverse application scenarios. Whether it's garden irrigation, vehicle washing, fire sprinkler systems, or agricultural spraying, sprinkler heads play an important role. This article will explore their diverse applications starting from the principles of sprinkler heads, and introduce specific application examples in different fields.
SUNROOM FIRE SAFETY MANUFACTURING
Contact Us
We strive tofurther improve the manufacturing level offire-fighting products.
Messages
Please fill in your information.
Contact Us
No. 55 Baoshun Road, Successful Development Zone,Quanzhou City，Fujian Province
Statement
Privacy Statement
This privacy policy discloses the privacy practices for Sunroom Fire Safety Manufacturing Tools. This privacy policy applies solely to information collected by this web site. It will notify you of the following:
What personally identifiable information is collected from you through the web site, how it is used and with whom it may be shared.
What choices are available to you regarding the use of your data.
The security procedures in place to protect the misuse of your information.
How you can correct any inaccuracies in the information.
Information Collection, Use, and Sharing
We are the sole owners of the information collected on this site. We only have access to/collect information that you voluntarily give us via email or other direct contact from you. We will not sell or rent this information to anyone.
We will use your information to respond to you, regarding the reason you contacted us. We will not share your information with any third party outside of our organization, other than as necessary to fulfill your request, e.g. to ship an order.
Unless you ask us not to, we may contact you via email in the future to tell you about specials, new products or services, or changes to this privacy policy.
Your Access to and Control Over Information
You may opt out of any future contacts from us at any time. You can do the following at any time by contacting us via the email address or phone number given on our website:
See what data we have about you, if any.
Change/correct any data we have about you.
Have us delete any data we have about you.
Express any concern you have about our use of your data.
Security
We take precautions to protect your information. When you submit sensitive information via the website, your information is protected both online and offline.
Wherever we collect sensitive information (such as credit card data), that information is encrypted and transmitted to us in a secure way. You can verify this by looking for a closed lock icon at the bottom of your web browser, or looking for “https” at the beginning of the address of the web page.
While we use encryption to protect sensitive information transmitted online, we also protect your information offline. Only employees who need the information to perform a specific job (for example, billing or customer service) are granted access to personally identifiable information. The computers/servers in which we store personally identifiable information are kept in a secure environment.
Updates
Our Privacy Policy may change from time to time and all updates will be posted on this page.
If you feel that we are not abiding by this privacy policy, you should contact us immediately via e-mail jefferries@sunroomfire.com
Powered by 300.cn