Wet alarm check valve is a crucial component for fire protection systems in buildings, factories, and other facilities. Its working principle is to prevent water from flowing back into the supply line while maintaining water pressure in the system. A wet alarm check valve operates as a gatekeeper between the water supply and the fire sprinklers. Its primary function is to control water flow and detect any potential obstruction in the system.
When the sprinkler system is not in use, the wet alarm check valve remains in a closed position. However, when a fire breaks out, the heat from the fire activates the sprinkler heads, causing them to release water onto the affected area. As the pressure in the sprinkler system increases, it also increases the pressure on the wet alarm check valve. The expanding pressure forces the valve to open, allowing the water to flow into the sprinkler system and extinguish the fire.
At the same time, the wet alarm check valve activates the alarm system, triggering fire alarms in the building. This feature is essential in buildings where occupants may not be aware of a fire, especially in areas such as underground car parks or storage areas. The alarm also alerts the fire department, who can then respond quickly to the emergency.
The wet alarm check valve has a built-in monitoring device that continuously checks the water supply line, ensuring that the system is not obstructed. Any obstruction in the water flow leads to a drop in water pressure in the sprinkler system. This drop in pressure activates the alarm system to alert building occupants of a potential blockage in the water supply line.
In conclusion, the working principle of the wet alarm check valve is to prevent water from flowing back into the supply line while maintaining water pressure in the sprinkler system. It ensures that the system is always ready to protect the building from fire emergencies and alerts occupants and the fire department of fire emergencies. With its built-in monitoring device, it enables timely detection and rectification of any potential water supply line obstruction, making it an essential component in fire protection systems.
