The introduction and classification of exhaust valve, as well as the method of selection

The introduction and classification of exhaust valve, as well as the method of selection

An exhaust valve is a valve used to discharge air and other non-condensing gases from a pipe. The main function of the exhaust valve is to remove the accumulated air or gas in the pipeline and prevent the excessive gas inside the pipeline from blocking the pipeline and unstable water pressure. In the water system, the exhaust valve can also discharge and reduce the amount of oxygen in the water, reducing the energy consumption of the pump.

The types of exhaust valves mainly include manual exhaust valves, automatic exhaust valves and vacuum inspirators.

Manual exhaust valves need to be opened or closed manually and are suitable for small exhaust systems or systems that require exhaust infrequently.

An automatic exhaust valve (also called an air valve) is a valve that can automatically discharge gas. They are suitable for systems that have high flow rates and require frequent venting. Automatic exhaust valves allow air to be discharged to stabilize water pressure in pumps and pipes when they are started before and after operation. They usually include sensitive parts in contact with water that automatically close the vent.

A vacuum getter is a valve capable of discharging gas under negative pressure conditions. They are suitable for outfall piping systems, especially at higher points in buildings or pumping stations, to automatically vent air and avoid creating a vacuum in the piping.

In the selection, need to consider the factors are: use occasion, medium characteristics, flow range, tolerable pressure and temperature range, etc. Appropriate exhaust valve type should be selected to adapt to the characteristics of the medium. In the further selection of specific models, also need to consider: medium temperature, pressure, density, viscosity, etc., to ensure that the equipment can work normally and efficiently.

In short, exhaust valves play an irreplaceable role in industry, construction, water treatment and other fields. Therefore, selecting suitable exhaust valves is also an important part of ensuring the stability of production and construction.