China butterfly valve category: According to the structure, connection and material classification

China butterfly valve category: According to the structure, connection and material classification

Butterfly valve is a commonly used fluid control equipment, mainly used to cut off and regulate the fluid in the pipeline. According to the structure, the connection method and the different materials, the Chinese butterfly valve can be divided into many types. This article will from a professional point of view, the types of Chinese butterfly valves are introduced in detail.

First of all, from the structural point of view, the Chinese butterfly valve can be mainly divided into four kinds: center shaft type, single eccentric type, double eccentric type and three eccentric type.

The center shaft type Chinese butterfly valve is the most common type of Chinese butterfly valve, and its structure is characterized by the valve plate rotating around a central axis, which is usually used in large diameter pipeline systems.

The structure of the single-eccentric Chinese butterfly valve is characterized by only one eccentric, so that the valve only rotates on one axis when it is opened and closed. The advantage of this Chinese butterfly valve is that the structure is simple, but the sealing performance is relatively poor.

The structure of the double eccentric Chinese butterfly valve is characterized by two eccentricities, so that the valve has two axes rotating when it is opened and closed. The sealing performance of this Chinese butterfly valve is better, but the structure is relatively complex.

The structure of the three-eccentric Chinese butterfly valve is characterized by three eccentricities, so that the valve has three axes rotating when it is opened and closed. This Chinese butterfly valve has the best sealing performance, but the structure is the most complex.

Secondly, from the connection mode, the Chinese butterfly valve can be mainly divided into three kinds of flange connection, clamp connection and thread connection.

The Chinese butterfly valve connected by flange is connected to the valve and the pipe, this connection is suitable for large diameter pipeline system.

The Chinese butterfly valve connected with the clamp is connected with the pipe through two bolts, and this connection is suitable for small and medium-sized pipe systems.

Threaded Chinese butterfly valves are threaded to connect the valve to the pipeline, which is suitable for low pressure and small diameter pipeline systems.

Finally, from the material point of view, Chinese butterfly valves can be mainly divided into cast iron Chinese butterfly valves, cast steel Chinese butterfly valves, stainless steel Chinese butterfly valves, copper Chinese butterfly valves and plastic Chinese butterfly valves.

Cast iron Chinese butterfly valve is made of cast iron as a material, with good corrosion resistance and wear resistance.

Cast steel Chinese butterfly valve is made of cast steel material, with excellent corrosion resistance and wear resistance.

Stainless steel China butterfly valve is made of stainless steel as a material, with excellent corrosion resistance and wear resistance.

Copper Chinese butterfly valve is made of copper material, with good corrosion resistance.

Plastic Chinese butterfly valve is made of plastic material, suitable for low temperature and low pressure pipeline system.

In general, there are many types of Chinese butterfly valves, and users should choose the right type of Chinese butterfly valves according to their actual needs and the use of the environment. At the same time, attention should also be paid to the installation and maintenance of the Chinese butterfly valve to ensure its normal operation and use effect.