Fire water flow instructions, pressure switch, signal butterfly valve their role
That is, each fire partition need to set the signal valve and water flow indicator, the signal valve is used to control the district's fire spray, usually open set, only maintenance or test time will be closed, once closed will feedback signal to Control room. Once the nozzle in the partition action or end of the test, the flow indicator will act, generate an alarm signal, feedback to the control room. And the pressure switch is a continuous nozzle action or water, will lead to alarm valve pressure switch action, direct linkage start the spray pump.
In accordance with Specification 6.3.1 In addition to the alarm valve group control of the nozzle only to protect the area of fire outside the same area, each fire partition, each floor should be set up water flow indicator.
6.3.2 Under the roof of the warehouse under the nozzle and the nozzle should be set separately water flow indicator.
6.3.3 When the control valve is set before the inlet of the flow indicator, the signal valve shall be used.
6.4.1 rain shower system and fire separation water curtain, the water flow alarm device should adopt the pressure switch.
6.4.2 Pressure switch should be used to control the regulator pump and should be able to adjust the start and stop pressure.
Water flow indicator, monitor the flow of water within the pipeline, there is water flow, through the monitoring module alarm.
Pressure switch, usually used for wet valve, wet valve action, the alarm flow signal into electrical signals, through the system linkage pump.
The signal valve is the control of the partition of the pipeline channel opening and closing, the installation of signal feedback device is to avoid the artificially closed valve caused the system can not be normal.
