What is a compound exhaust valve
The compound exhaust valve is a key ventilation device in pipeline systems, specially designed to solve problems such as air accumulation and negative pressure suction in pipelines. It has both automatic exhaust and suction functions and is widely applicable to various fluid transportation scenarios such as water, sewage, and chemical media.
Its core features are concentrated on high efficiency and reliability: Firstly, it has bidirectional ventilation. It can not only quickly expel a large amount of air when the pipeline is filled with water to avoid air blockage affecting the flow rate, but also automatically draw in air when the pipeline is emptied or the pressure drops sharply to prevent the pipeline from deforming and being damaged due to negative pressure. Second, it ensures thorough exhaust. The built-in precision float ball and valve core structure can expel trace amounts of air in the pipeline, guaranteeing the efficiency of fluid transportation.
Thirdly, it is corrosion-resistant and durable. The valve body is mostly made of high-quality materials such as cast iron and stainless steel, and the sealing parts are made of wear-resistant rubber or PTFE, which is suitable for different media and working conditions and has a long service life. Fourth, it is easy to install, supporting vertical installation at the high points, ends of pipelines or areas prone to negative pressure, and has low maintenance costs.
The practical application scenarios are very extensive: in municipal water supply networks, it is used in the outlet pipes of water plants, the high points of main pipes and long-distance water transmission lines to avoid uneven water supply caused by air resistance. In the water supply and drainage system of high-rise buildings, it is installed at the outlet of the rooftop water tank and the top of the riser to solve the exhaust and negative pressure problems of high-rise water supply. In the industrial field, it is applicable to the medium transportation pipelines in the chemical, power and metallurgical industries, especially the ventilation requirements of high-temperature, high-pressure or corrosive medium pipelines.
In sewage treatment plants, it is used for the outlet of sewage lift pumps, aeration pipes and return pipes to ensure the stability of the sewage treatment process. In addition, it is widely used in agricultural irrigation, central air conditioning water circulation systems, etc., providing a guarantee for the safe and efficient operation of various pipeline systems.
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