Rubber Lined Butterfly Valve

Rubber-lined butterfly valve is a commonly used device to control the flow of medium, which is often used in chemical, petroleum, food, pharmaceutical, sewage treatment and other industries, and is widely used.

The structure of the rubber-lined butterfly valve is mainly composed of the valve body, valve stem, valve plate and sealing material. The valve body is the main part of the valve, which is generally made of cast iron, stainless steel and other materials, and there are also different materials such as stainless steel lining and PP lining. The stem is the part that connects the valve plate and the handwheel, which plays the role of opening and closing the valve. The valve plate is the core part of the valve opening and closing, which is composed of two symmetrical semi-circular or fan-shaped plates, which are switched and closed by the rotation of the valve stem.

During use, when the valve is closed, the two semicircular or fan-shaped plates of the valve plate seal with the sealing face on the valve seat, forming a closed cut-off state, which prevents the medium from flowing through the valve. When the valve is opened, the disc is turned and then unfolded to the sides, leaving a wide opening for the medium to pass through the valve. When the valve is closed, the leakage of the medium in the pipeline is effectively prevented because the disc and seat are firmly sealed.

A distinctive feature is that the surface of the rubber-lined butterfly valve disc is covered with an elastomeric sealing material that also acts on the seat, such as EPDM, PTFE, etc. In the face of different requirements such as chemical properties and temperature, pressure and other different media, different lining materials can be selected, and the biggest advantage of these lining materials is that they have good corrosion resistance, and are suitable for environments where chemical media contain strong corrosive substances such as phosphoric acid, hydrofluoric acid, and hydrochloric acid. At the same time, the rubber lining material itself also has good aging and wear resistance, which can ensure a longer service life of the valve.

In general, rubber-lined butterfly valves are widely used in a wide range of industries. Its advantages are good switching performance, simple and convenient operation, high sealing performance, corrosion resistance, etc. At the same time, it plays a role in controlling the flow of the medium, making the flow of the medium more safe and stable in the pipeline.

1. Reliable sealing: The rubber-lined butterfly valve uses high-quality rubber or PTEE material as the sealing material, which can effectively prevent the leakage of media and external dust and moisture from entering the pipeline system.

2. Strong durability: The material of the rubber-lined butterfly valve has high strength and corrosion resistance, and can withstand the corrosion and wear of a variety of media.

3. Easy operation: The structure of the rubber-lined butterfly valve is simple, small in size, light in weight, and easy to install and maintain. At the same time, the transmission mechanism is also very easy to control and operate.

4. High compatibility: Due to the wide selection of sizes, materials and connections, the rubber-lined butterfly valve has a high compatibility in a variety of application environments.

5. Low noise: The rubber lined butterfly valve has low noise during operation and will not affect the surrounding environment and the experience of the staff.

Design Features:

1. Simple structure: The rubber-lined butterfly valve is mainly composed of valve body, valve plate, rubber lining and transmission device, with simple structure, small size and light weight.

2. Flexible operation: The transmission mechanism of the rubber-lined butterfly valve can choose manual, pneumatic, electric and other transmission modes according to actual needs.

3. Good sealing performance: due to the good sealing performance of the rubber lining material, it can achieve high sealing performance, and can also be used in the environment of high temperature, high pressure and strong corrosive medium.

4. Good detachability: The rubber-lined butterfly valve adopts clamp or flange connection, which is easy to disassemble, and the replacement and maintenance are also very simple.

5. Strong adaptability: The selection of rubber lining materials can be based on different media requirements, such as temperature, pressure, environment, etc., and different valve materials can also be selected according to the specific application environment.

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