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What are the selection criteria for electric butterfly valves and pneumatic butterfly valves?
Date:2024-09-30 12:00:00 Author:上海亚高阀门有限公司

Advantages and Applications of Electric Butterfly Valves

Electric butterfly valves are very common devices for regulating pipeline flow. They have a wide range of applications and cover many fields, such as the regulation of water flow in reservoir dams in hydropower plants, and the regulation of industrial fluids in factories. Below, we will introduce the characteristics, advantages, and applications of electric butterfly valves in detail.

1. Excellent Sealing

The sealing performance is very important when choosing a valve. Since electric butterfly valves are used to regulate fluid flow, they are exposed to high temperatures and high pressures during operation. If the sealing performance is poor, it will lead to fluid leakage and make it impossible to accurately regulate the flow. Electric butterfly valves have a special sealing system, so they have excellent sealing performance within a wide temperature range, that is, the sealing performance of electric butterfly valves is not affected by temperature, and the operation of the electric regulating valve is very convenient.

2. Zero Leakage

The most commendable feature of electric butterfly valves is their sealing performance. The sealing of the valve stem shaft diameter is achieved by a very sealed sealing ring. This sealing ring is made of graphite and does not get stuck with the butterfly plate of the electric butterfly valve. Therefore, the sealing performance is very excellent and zero leakage, ensuring fire safety. Electric butterfly valves that are zero leakage and have good sealing performance are the preferred choice for many customers.

3. Convenient Adjustment and Control

Electric butterfly valves are devices used to control fluid flow. Besides regulating the flow of fluids, they can also transport substances with certain viscosity, such as slurry. Moreover, the liquid accumulated in the pipeline is less, and the opening and closing of the electric butterfly valve is fast and simple.

There are many types of valves used in industrial applications, but finding a truly satisfactory valve requires some effort. Electric butterfly valves have a wide range of applications, strong operability, and excellent sealing performance. They are one of the most commonly used types of industrial electric valves.

Advantages and Applications of Pneumatic Butterfly Valves

Pneumatic butterfly valves are composed of a pneumatic actuator and a butterfly valve. Pneumatic butterfly valves use a circular butterfly plate that rotates with the valve stem to achieve opening and closing actions, making them pneumatic valves for cutting off flow. They are mainly used as shut-off valves, but can also be designed with regulating or segment valve functions. Butterfly valves are increasingly used in low-pressure, medium and large-diameter pipelines. Pneumatic butterfly valves are classified as: stainless steel pneumatic butterfly valves, hard-sealed pneumatic butterfly valves, soft-sealed pneumatic butterfly valves, and carbon steel pneumatic butterfly valves. The main advantages of pneumatic butterfly valves are simple structure, small size, light weight, low cost, and the particularly significant feature of pneumatic butterfly valves is that they are easy to operate through a two-position five-way electromagnetic valve when installed in high-altitude underground tunnels. They can also adjust the flow medium.

The powder material system of pneumatic butterfly valves, as well as other factors to be considered, include: the material should not be directly pushed onto the valve plate when loading into the cart (this impact force will also cause the valve not to close tightly), and the static pressure of the material should not exceed the design pressure of the pneumatic butterfly valve, etc.

The difference between control valves and ordinary manual valves lies in that they cannot be regarded as an isolated component. Instead, they must be considered as part of the entire automatic control system. Many problems in the use of control valves are not related to selection and configuration, but rather due to the user's insufficient understanding of control valves, resulting in the failure to properly debug and coordinate control valves with the control system. As long as the key issue is recognized, the valve is correctly selected, and the control valve is properly debugged during the system debugging stage, the failure rate can be significantly reduced, and the self-control system can operate stably for a long time.

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