What are the classification of check valves?
Classification:
Release Time：2021-05-21
The check valve is mainly used to prevent the medium in the pipeline from flowing back. Bottom valve and duckbill valve also belong to the check valve system. Check valve can be divided into lifting, swing, disc type three.
The check valve is mainly used to prevent the medium in the pipeline from flowing back. Bottom valve and duckbill valve also belong to the check valve system. Check valve can be divided into lifting type, swing type, disc type three:
⑴ The lifting type is divided into two types: vertical and horizontal. The lifting structure moves along the axis.
Examples:
① lift mute check valve is used in water supply and drainage engineering quality requirements of the pipeline; at the same time can be installed at the outlet of the pump, requiring pressure (PN2.5Mpa) relatively high pipe network, is an important product of waterproof impact check valve.
② lifting muffler check valve for high-rise building water supply and drainage system and the pump outlet, not suitable for sewage pipeline occasions.
The horizontal check valve is suitable for diving, drainage, sewage pump, especially suitable for sewage and sludge system.
⑵ The swing type is divided into single-valve type, double-valve type and multi-valve type. The selective-start structure rotates according to the center of gravity.
Examples:
① The optional rubber check valve is applied to the urban water pipe network system and is not suitable for sewage pipelines with many deposits.
② Swing type single disc check valve is the most widely used, can be installed in water supply and drainage, petroleum, chemical, metallurgy, industry and other pipelines, the space is limited to the most appropriate occasions.
(3) The disc structure is straight-through.
Examples:
The disc type double valve is mainly used in high-rise building water supply pipeline, containing corrosive media and sewage in the fluid pipe network.
② Swing type single disc check valve is the most widely used, can be installed in water supply and drainage, petroleum, chemical, metallurgy, industry and other pipelines, the space is limited to the most appropriate occasions.
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