What are the valves in the chemical industry pipeline？

Valves are widely used in the design of chemical piping systems because of their unique advantages in chemical design, which are in the position to more effectively control the operation of chemical pipelines. Whether their selection is reasonable will directly affect the safety and effectiveness of pipeline operations, which has an exceedingly profound effect. Choosing reasonable and common valves in the design of chemical pipelines is able to provide effective guarantee for the safe operation of chemical pipelines, which also plays an important role in controlling the costs in chemical design. Therefore, in order to ensure that the chemical design is reasonable and that the pipeline can be implemented normally, it is necessary to strengthen the research on valve selection strategies.

Commonly Used Valve Types in Industrial Pipelines

There are various types of commonly used valves in chemical design. Gate valves play a regulatory role in chemical pipelines, whose effortless switches and good tightness are well placed. However, its complicated structure and large size are not conducive to the daily maintenance of chemical pipelines. The globe valve makes up for the shortcomings of the gate valve to a certain extent, having better adjustment performance and simple structure, which is convenient for daily maintenance. In addition, because of its cheap price, it has a very wide range of applications in chemical design. The throttle valve, the same structure as the shut-off valve, has the advantages of better adjustability and small size. Butterfly valve is a valve that relies on vertical rotation to achieve on-off control, which has a simple structure, small volume and good control performance. The plug valve uses a plug body with a through hole to achieve on-off control. Each valve has its own strengths and frailties, which work together to ensure the normal and safe operation of chemical pipelines.

Basis for valve selection

Gate valve

A gate valve is a kind of valve passage switch, which can use the spool to open or close the valve passage directly during its operation. Generally, this kind of valve is used to control the pressure fluid on and off during the design of chemical pipelines. The gate valve not only guarantees the timeliness of opening or closing the valve, but also has the advantages of stable structure, strong practicability and high flexibility. However, its structure is complicated, whose sealing surface is easy to damage, bringing about high price.

Plug valve

The plug valve is mainly used in fast switching and closed pipelines, and at the same time, it is also available in high viscosity and suspended particle media, which is not suitable for steam and high temperature media. Conversely, this kind of plug valve has few practical applications and it is difficult to cope with complex media requirements.

Butterfly valve

The butterfly valve is more suitable for the pipeline with shorter structure length and larger size. It is more suitable for the butterfly valve for occasions that require quick opening and closing and large flow. In terms of oil products and compressed air media, it can also be used under the conditions of temperature less than 80 ℃ and pressure 1MPa.

When selecting valves for chemical pipeline design, according to the actual situation of the enterprise, valves with moderate prices should be selected, which also needs to meet the requirements of pipeline design. The chemical pipeline design cannot lose the trees for the forest, causing economic losses to the enterprise or reducing product quality. We not only choose the right valve, but also have to pay attention to the valve material, such as cast steel valve, forged steel valve and carbon steel valve.