Primary Categories of Air Valves That Homeowners Need to Know

Automatic air valves, air and vacuum valves, and combination air valves are the three varieties of air valves that may be found in various water distribution systems.

Automatic air valves allow a pressurized line to continually discharge relatively tiny quantities of air through its openings. There are a few different names for automatic air valves, including pressure air valves and tiny orifice air valves.

Air and vacuum valves are mostly utilized during the process of filling a line. These valves allow significant amounts of air to be expelled from pipelines that are not under pressure. Valves for air and vacuum make it feasible to let huge volumes of air in when lines are emptied or when there is an abrupt drop in pressure. Valves for air and vacuum are sometimes referred to as big orifice air valves, vacuum breakers, low-pressure air valves, air relief valves, and single-action air valves. Other names for these valves are kinetic air valves.

Combination air valves take on the functions of both automated ventomat air valves and air and vacuum valves in one convenient package. The automated air release function allows for the discharge and admission of huge volumes of air during the process of filling or draining pipes. Additionally, the air and vacuum function allows for the accumulation of air to be released from the system while it is under pressure. Combination air valves are sometimes referred to as double orifice air valves, double acting air valves, and dual orifice air valves. All these names refer to the same type of valve.

The dimensions of the air valves and their positions

Dimensions of air valves are determined for a given installation by considering flow rate, geographic location, and air valve performance. Therefore, the diameter of the pipe that the air valve is put on does not correspond exactly to the diameter of the air valve’s DN. Advanced calculation programmes provide analyses such as fill rate analysis, drainage analysis, burst analysis, water column separation analysis, and energy saving analysis, which are used to define the size and location of air valves for a particular project. These analyses help determine how large the air valves should be.The release of undesirable air pockets from inside a pipeline is the primary purpose of an air valve; but, for it to perform its role properly, it must be put in the appropriate location. It is possible for the performance of the air valve to be greatly improved by moving it to the appropriate place. As a result, air valves need to be fitted at those spots along the pipeline that are most likely to experience a pressure that is lower than atmospheric pressure. In general, the best location for installing an air valve is at the highest point of the pipeline, and the valve itself must be always positioned in a vertical orientation.Prior to the installation of an air valve, careful consideration must be given to the site to ensure that the valve will be safe from hazards such as flooding, pollution, and freezing temperatures. Maintenance, operation, and inspection should not be difficult to perform if the air valve is freely accessible.

Delsie Leff



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