Before we do fire linkage is only linkage signal valve, but suddenly see some of the drawings are also linked to the pressure switch, ask, what is the pressure switch with the shower signal valve is what ah! Do you need to activate the pressure switch after the linkage signal valve?
The linkage signal valve also need to linkage after the pressure switch, because the linkage valve to start the sprinkler system after the spray system will drop the pressure, the pressure switch will start the pressure pump to the sprinkler system
It is best to linkage, because the signal valve action will cause the water pipe pressure drop, so then need to follow the pressure switch action to ensure that the water pipe pressure to ensure that the front strong and out of water to achieve rapid fire.
Pressure switch is to ensure that the water pipe pressure, low to pressure, high to the pressure. Otherwise, the signal valve action, the results of water pipes without water, that is not useless.
