ZSFU pre-action alarm valve device

Type pre-action alarm valve device consists of deluge valve, one-way valve, water inlet signal butterfly valve, emergency station, solenoid valve, drip valve, water supply pressure gauge, control chamber pressure gauge, control chamber water inlet valve, control chamber Water inlet filter, control chamber water inlet check valve, control chamber water inlet orifice plate, control chamber water inlet hose, alarm pipeline filter, alarm control valve, alarm test valve, alarm pipeline drain orifice plate, pressure It is composed of switches, hydraulic alarm bells, drainage ball valves, etc. (For details, please refer to the appearance diagram of the pre-action alarm valve device and the piping schematic diagram of the pre-action alarm valve device).
The pre-action device is used in the pre-action system. Once a fire occurs, the detector will first act and send out an audible alarm signal. At the same time, the pre-action valve will be opened to fill the entire system with water, and water will be sprayed from the activated sprinkler head to extinguish the fire immediately. .
System principle:
The pre-action system is an automatic sprinkler system developed over the past few years. It combines fire detection and alarm technology with the automatic sprinkler system to provide dual protection for the protected objects. When a fire does not occur, the side pipes of the system are filled with air, so the system has the characteristics of a dry system and can meet the needs of automatic water spraying for fire extinguishing under high temperature and severe cold conditions. Once a fire occurs, the temperature-sensing and smoke-sensing fire detectors installed in the protected area first send out a fire alarm signal. After receiving the alarm signal, the fire alarm controller sends a command signal to open the deluge valve. At this time, the system side pipe network is charged. Water turns the system into a wet system before the closed sprinkler head is opened. At the same time, the hydraulic alarm bell sounds, the pressure switch operates, and audible and visual warnings are activated to show that the pipe network is filled with water. At this time, if the fire continues to develop, the glass ball of the closed sprinkler head will break, and the sprinkler head will spray water to extinguish the fire.
When the relevant personnel receive the alarm signal from the fire alarm controller or hear the sound of the hydraulic alarm bell, they promptly organize personnel to put out the fire, and the closed sprinklers will not open the sprinklers, thus avoiding losses caused by water damage. After the fire is extinguished, the deluge valve should be closed and the water in the pipeline should be drained to inflate the system and restore the service state. The inflation pressure is within the range of .., and the inflation volume is not less than ./ to ensure that the pressure of the valve is completed within the range. It is controlled by an interlocking device composed of an air maintenance device, a pre-action control cabinet and an air compressor. The function of inflating the pipe network is to monitor the working conditions of the system pipelines and whether the pipelines and nozzles are damaged or leaking. When the pipelines are damaged or have large leaks, When the air pressure in the system is lower than...
Features:
The pre-action system is particularly suitable for important places where it is cold or where water damage is avoided and mis-spraying is not allowed.
.The pre-action system must be installed directly. It consists of a deluge valve device, a signal butterfly valve, a check valve, a connecting flange, etc. The main specifications are, and the working pressure is...
.This device is supplied in complete sets, providing great convenience for users to install and use.