The water flow indicator can also be used in the automatic sprinkler system, which can be installed on the main water supply pipe or the cross-bar water pipe to give the electric signal of the water flow in a small area of a partition. This electrical signal can be sent to the electric control box, but it is usually not used as a control switch to start the fire pump.
Structural characteristics and working principle of signal valve: the electric signal device of butterfly valve is designed at the top of worm gear and worm drive, which is directly connected with the valve stem. In the precision fully enclosed electromechanical device, there are mechanical indications of valve opening, imported electrical components and rust-proof parts. The output signal is stable and reliable for a long time.
Extended data:
The valve has an electrical node, which is led out to the control center through a signal line with the voltage of 12v. In fact, it is the opening and closing of the valve, and the signal is transmitted to the fire center for easy monitoring. In addition to the electric node, the valve is not much different from the ordinary valve, and there is also a signal butterfly valve.
The water flow indicator can also be used in automatic sprinkler system, which can be installed on the main water supply pipe or horizontal main pipe to give the electric signal of water flow in a small area of the community. This electrical signal can be sent to the electric control box, but it is usually not used as a control switch to start the fire pump.
Except O-rings, elastic nonmetallic gaskets shall be subjected to water aging test. After the test, check whether there is looseness, adhesion and brittleness between the gasket and the fixture.
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