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Structure and operating characteristics of butterfly valve


Answer: structure: butterfly valve is composed of body, disc, stem, and handle. It is the use of disc opening and closing parts, disc disc valve fixed on the valve stem, stem rotation 90 ° to complete the opening and closing action. At the same time, when the valve opening angle is 20 ° ~ 75 °, the flow rate is linearly related to the opening angle, and there is a throttling characteristic.

Operating characteristics: Butterfly valves are widely used in various media with nominal pressure below 2.0MPa and temperature not higher than 200 ℃. During the operation of the valve, the stem of the butterfly valve only rotates, and the butterfly plate and the stem have no self-locking ability. To be attached to the valve stem with self-locking ability of the reducer, the butterfly rod can stop at any position.