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Valves are key devices that control the flow of fluids (liquids, gases, slurries, etc.) in pipelines. They achieve control of flow rate, pressure, and direction by opening, closing, or adjusting the cross-sectional area of the channel.
core functionality
1. Cut off/connect: Fully open or close, cut off or allow fluid to pass through, such as gate valves and ball valves.
2. Adjustment: Partial opening, precise control of fluid flow and pressure, such as regulating valves and shut-off valves.
3. Check valve: Only allows one-way fluid flow to prevent backflow, such as check valves (one-way valves).
4. Safety protection: When the system pressure exceeds the set value, it automatically opens to release pressure and protect equipment, such as safety valves.
Main types and characteristics
-Gate valve: Controlled by gate lifting, it has good sealing performance, low fluid resistance, and is suitable for cutting scenarios with large diameters and low flow rates.
-Ball valve: It relies on the rotation of the ball to achieve opening and closing, operates quickly (90 ° rotation), has minimal flow resistance, and is suitable for quick cutoff and frequent operation.
-Globe valve: Controlled by valve disc lifting and lowering, it has good regulating performance but high flow resistance, and is commonly used in pipelines that require flow regulation.
-Check valve: It uses the pressure of the fluid itself to automatically open and close, preventing the backflow of the medium. It is commonly found at the outlet of pumps or in vertical pipelines.
-Butterfly valve: Controlled by the rotation of the butterfly plate, it has a compact structure, light weight, and is suitable for large-diameter ventilation and water supply and drainage pipelines.
key components
It is usually composed of a valve body (main body, connecting pipeline), valve disc/spool/butterfly plate (core component for controlling flow), valve stem (transmitting power, connecting actuator and spool), seals (ensuring sealing, such as valve seat and packing), and actuator (driving valve action, manual, electric, pneumatic, hydraulic).
Applicable scenarios
Covering almost all industrial and civilian sectors:
-Industry: Petroleum, chemical, power, metallurgy and other industries, controlling media such as raw materials, steam, and wastewater.
-Civilian: building water supply and drainage, heating systems, gas pipelines, etc., such as household water valves and gas valves.
-Special fields: food and medicine (sanitary valves), aerospace (high-temperature and high-pressure valves), etc.
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Mobile: +86-18803378888
Email: 675466047@qq.com
Address: Hope New Area, Mengcun Hui Autonomous County, Hebei Province, China
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