Ball valve categories
Date:2024-06-10 Click:512
Ball valve is a valve widely used in fluid control systems. It has a simple structure, easy operation and good sealing. According to different classification standards, there are many types of ball valves:
Classification by structure
Floating ball valve: The ball can float freely under the pressure of the medium, and the medium pressure makes the ball close to the sealing ring to achieve a sealing effect. Suitable for medium and low pressure and small diameter pipelines.
Fixed ball valve: The ball is fixed and the valve seat moves with the medium pressure. The seal is achieved by the movement of the valve seat. Suitable for large diameter and high pressure pipeline systems.
Elastic ball valve: The ball has a certain elastic deformation ability, and the sealing effect is achieved through the elastic deformation of the ball. Suitable for high temperature and high pressure conditions.
Classification by channel form
Straight-through ball valve: The channel is linear, and the fluid passes through the straight-through channel from the inlet to the outlet. It is suitable for occasions that need to be fully opened or fully closed.
Three-way ball valve: There are two structures, L-type and T-type, which can realize the diversion, confluence and flow direction conversion of the fluid, and are suitable for pipeline systems that need to change the flow direction of the fluid.
Four-way ball valve: The channel form is complex, which can achieve more flexible flow control and is suitable for complex pipeline systems.
Classification by connection method
Flange connection ball valve: It is connected to the pipeline through flange, which is easy to install and disassemble, and is suitable for high-pressure and large-diameter pipeline systems.
Threaded connection ball valve: It is connected to the pipeline through thread, which is suitable for medium and low pressure and small-diameter pipeline systems.
Welded connection ball valve: It is connected to the pipeline through welding, with good sealing, and is suitable for pipeline systems with high pressure, high temperature and corrosive media.
Classification by drive method
Manual ball valve: It is manually operated by handle or handwheel, suitable for small diameter and medium and low pressure pipelines.
Electric ball valve: It is operated by electric actuator and is suitable for pipeline systems with high degree of automation.
Pneumatic ball valve: It is operated by pneumatic actuator and is suitable for pipeline systems that need to be opened and closed quickly.
Classification by sealing material
Soft sealing ball valve: The sealing material is PTFE, rubber, etc., with good sealing performance, suitable for normal temperature and medium and low pressure pipelines.
Hard sealing ball valve: The sealing material is metal, which is resistant to high temperature and high pressure, and is suitable for pipeline systems with high temperature, high pressure and corrosive media.
By understanding the different types of ball valves, you can choose the most suitable ball valve type according to actual needs to ensure the reliability and efficiency of the fluid control system.
