Introduction to the characteristics and usage of butterfly valves

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Introduction to the characteristics and usage of butterfly valves and detailed explanation of performance: Introduction to the characteristics and usage of butterfly valves Butterfly valve refers to a valve whose closing part (valve flap or butterfly plate) is a disc and rotates around the valve axis to open and close. It mainly serves to cut off and throttle the pipeline. The butterfly valve opening and closing part is a disc-shaped butterfly plate that rotates around its own axis in the valve body to achieve the purpose of opening and closing or adjustment. The angle from fully open to fully closed of a butterfly valve is usually less than 90°. The butterfly valve and butterfly rod themselves do not have self-locking capabilities. In order to position the butterfly plate, a worm gear reducer must be installed on the valve rod. The use of worm gear reducer not only makes the butterfly plate self-locking, allowing the butterfly plate to stop at any position, but also improves the operating performance of the valve. The characteristics of the industrial butterfly valve are that it can withstand high temperatures, has a high applicable pressure range, has a large nominal diameter, the valve body is made of carbon steel, and the sealing ring of the valve plate uses a metal ring instead of a rubber ring. Large high-temperature butterfly valves are manufactured by welding steel plates and are mainly used in flue ducts and gas pipelines for high-temperature media. The advantages of butterfly valve are as follows: 1. Opening and closing is convenient, fast, labor-saving, has small fluid resistance, and can be operated frequently. 2. Simple structure, small size and light weight. 3. It can transport mud with minimal liquid accumulation at the pipe mouth. 4. Under low pressure, good sealing can be achieved. 5. Good adjustment performance.