In the aluminium alloy compressed air piping system, how to choose the right valve

When selecting the right valve for an aluminium compressed air piping system, a number of factors need to be considered to ensure efficient, safe and reliable operation. Below are some key steps and points to guide the selection of the right valve:

1. Valve type:

Firstly, choose the appropriate valve type according to the specific needs of the system. In compressed air pipelines, commonly used valve types include ball valves, butterfly valves, globe valves, regulators and safety valves.

Ball valves: suitable for occasions requiring frequent opening and closing, with fast opening and closing speed, lightweight operation, corrosion resistance and other characteristics.

Butterfly valve: usually used to control air flow and regulate pressure, with rapid opening and closing, easy to operate, high temperature, low temperature, corrosion resistance and other characteristics.

Shut-off valve: mainly used to cut off the fluid, to avoid pipeline rupture or leakage due to excessive pressure, high security and reliability.

Regulator: used to control the pressure in the pipeline, to ensure the normal operation of the compressed air pipeline.

Safety valve: an automatic protection device, used in the pipeline when the pressure exceeds a predetermined value quickly release the pressure to avoid danger.

2. Valve specifications:

According to the inner diameter of the pipeline, internal pressure and other parameters, select the appropriate valve specifications. Ensure that the valve can fully match the size and pressure requirements of the pipeline to ensure its normal operation and sealing.

3. Material selection:

Due to the special characteristics of aluminium alloy piping system, the valve material also needs to be considered. Aluminium alloy material has the advantages of light weight, high strength and good toughness, but there may be disadvantages such as low temperature brittleness. Therefore, when selecting valves, it should be ensured that the valve material matches with the piping system, and factors such as the temperature and humidity of the use environment should be considered.

4. Interface form:

Select the interface form of the valve according to the connection of the pipeline, such as flange connection, threaded connection, welded connection and so on. Ensure that the connection between the valve and the pipeline is close and reliable to prevent leakage and safety accidents.

5. Operating temperature:

The operating temperature of the valve should be matched with its material and sealing material. When selecting valves, you need to consider the operating temperature range of the system and select the appropriate type of valve and sealing material.

6. Media properties:

The nature of the medium is also an important factor to consider when selecting the valve. Different media have different requirements for the material and structure of the valve. When selecting the valve, you need to understand the nature of the medium, such as corrosion, temperature, pressure, etc., to ensure that the valve can operate properly and meet the system requirements.

7. Maintenance and repair:

Consider the ease of maintenance and repair of the valve. Selecting the type of valve that is easy to maintain and service can reduce maintenance costs and improve system reliability.

To sum up, when choosing suitable valves in aluminium alloy compressed air piping system, it is necessary to comprehensively consider factors such as valve type, specification, material, interface form, working temperature, media characteristics and maintenance and repair. Through reasonable selection, it can ensure the efficient, safe and reliable operation of the system. Meanwhile, it is recommended to consult professional technicians or refer to relevant technical specifications and standards when selecting valves.