brief introductionThe regulating and intercepting equipment commonly used in fluid pipeline system can control the medium flow through the rotation of valve clack, which is widely used in water supply and drainage, sewage treatment, petrochemical industry, electric power, metallurgy, municipal engineering and other fields, and is the key component to realize the medium on-off and flow regulation in pipeline system.primary structureValve body, valve disc, valve shaft, driving device and sealing element. As the main frame, the valve body connects the pipeline and provides support for the internal components; The disc is disc-shaped and rotates around the valve shaft, and the medium flow section is controlled by changing the relative position with the valve seat; Driving devices can be divided into manual, electric and pneumatic types, which provide power for the rotation of the valve disc and realize the opening, closing and adjustment of the valve. The seal is usually installed at the contact part between the valve seat and the disc to ensure the tightness when the valve is closed and prevent the medium from leaking.principle of operationBased on the rotary motion of the disc: when the disc rotates to be parallel to the pipeline axis, the valve is fully opened and the medium can pass smoothly; When the disc rotates to be perpendicular to the pipeline axis, the valve is fully closed, blocking the flow of medium; By controlling the rotation angle of the valve disc (0-90), the continuous adjustment of medium flow can be realized.outstanding featureCompact structure, small volume, light weight, small occupied space, convenient installation and maintenance, especially suitable for large-diameter pipeline systems; The circulation resistance is small, and the energy loss is low when the medium flows, which is beneficial to reducing the energy consumption of the system; Quick opening and closing, convenient operation, good adjustment performance and quick response to working condition changes; Reliable sealing performance, using high-quality sealing materials and precision processing technology, can effectively adapt to different media characteristics (such as clean water, sewage, corrosive liquid, gas, etc.); The range of applicable pressure and temperature is wide, and the valve bodies and seals made of corresponding materials (such as cast iron, cast steel, stainless steel, etc.) can be selected according to different working conditions to meet diverse application scenarios.