The valve is installed at the outlet of the water pump or in the water supply and distribution pipeline, which is used to discharge a large amount of air accumulated in the pipeline or a small amount of air accumulated in the higher part of the pipeline to the atmosphere, so as to improve the use efficiency of the pipeline and the water pump. Once negative pressure is generated in the pipeline, the valve quickly sucks in external air to protect the pipeline from being damaged by negative pressure.
The principle of sewage compound exhaust valve is the same as that of clean water compound exhaust valve, but the structure is slightly changed, that is, the valve body is lengthened and the lever mechanism is slightly changed, so that sewage only accumulates at the lower part of the valve body, which does not affect the exhaust and will not cause water leakage.
Extended data
Precautions for installation:
1, the exhaust valve must be installed vertically, that is, the internal buoy must be kept in a vertical state, so as not to affect the exhaust;
2. When installing the exhaust valve, it is best to install it together with the partition valve, so that when the exhaust valve needs to be disassembled for maintenance, the system can be sealed and water will not flow out;
3. The exhaust valve is generally installed on the pipeline where the system is easy to collect gas, such as the highest point of the system and the highest point of a section of pipeline, which is conducive to smooth exhaust.
When the gas overflows in the system, the gas will climb up along the pipeline. The final gathering is at the highest point of the system, and the exhaust valve is generally installed at the highest point of the system. When gas enters the valve cavity of the exhaust valve and gathers at the upper part of the exhaust valve, the pressure will rise with the increase of gas in the valve. When the gas pressure is greater than the system pressure, the gas will make the water level in the cavity drop, and the buoy will open the exhaust port with the drop of water level.
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