Double Ball Valve
Double Ball Valve is a specially designed ball valve, the core feature of which is the use of two ball structures, through the unique sealing and flow channel design, to achieve higher sealing performance and lower flow resistance. Double Ball Valve is widely used in petroleum, chemical, natural gas, water treatment and other industries, especially for the control and cut-off of high pressure, high temperature and corrosive media.
Design Principle
- Double Ball Structure:
There are two balls inside the double ball valve, usually the main ball and the auxiliary ball.
The main ball is responsible for the main medium cutting function, and the auxiliary ball is used for auxiliary sealing and reducing the wear of the main ball.
- Double Seal:
The main seal is formed between the main ball and the valve seat to ensure zero leakage of the medium in the closed state.
Auxiliary seal is formed between the auxiliary ball and the valve seat to further enhance the sealing performance and prevent medium leakage.
- Flow Channel Design:
The flow channel of the double ball valve is designed as full bore or reduced bore, which reduces fluid resistance and improves system efficiency.
The flow channel design of the main ball and the auxiliary ball makes the medium flow more smoothly when passing through the valve and reduces pressure drop.
- Operating mechanism:
Double-ball ball valves are usually operated manually, by gear drive, electric or pneumatic.
The operating mechanism design enables the main ball and the auxiliary ball to move synchronously or in steps to ensure the reliable opening and closing of the valve.
Main Features
High sealing performance
The double sealing design ensures zero leakage of the valve under high pressure, high temperature and corrosive media.
Low flow resistance
The flow channel design reduces fluid resistance and improves system efficiency.
Long life
The double-ball structure reduces the wear of the main ball and extends the service life of the valve.
Wide range of applications
Suitable for high pressure, high temperature and corrosive media in the petroleum, chemical, natural gas, water treatment and other industries.
Application Areas
- Petrochemical: Used for the control and cut-off of crude oil, natural gas and chemical media.
- Water treatment: Used for flow regulation and cut-off of water supply and drainage systems and sewage treatment plants.
- Electricity: Used for the control of boiler feed water and cooling water systems.
- Metallurgy: Used for the control of high temperature and high pressure gas and liquid.
- Food and medicine: Used for the control and cut-off of sanitary media.
The double ball valve achieves high sealing performance and long life through double ball structure, double sealing design, low flow resistance flow channel and multiple driving modes. Its design principle fully considers the impact of high pressure, high temperature and corrosive media on valve performance, and is an indispensable key equipment in industrial pipeline systems.
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