球阀的工作原理是通过旋转阀芯来实现阀门的开启或关闭。球阀的启闭件是一个球体，球体绕阀杆的轴线旋转90度，从而控制流体的通断。当球阀旋转到开启位置时，流体可以通过球阀；而当球阀旋转到关闭位置时，球体与阀座紧密接触，阻止流体通过。球阀具有开关轻便、体积小、密封可靠、结构简单、维修方便等特点，并且适用于多种介质，包括含纤维、微小固体颗粒的介质。
B3T72903-15G-T1-F，B3T72903-20G-T1-F，
B3T72903-25G-T1-F，B3T72903-32G-T1-F，
B3T72904-40T-T2-F，B3T72904-50T-T2-F，
B3T72904-65T-T2-F，B3T72904-80T-T2-F，
B3T72904-15T-T2-F，B3T93905-15N-T3-F7，
B3T93905-20N-T3-F7，B3T93905-25N-T3-F7，
B3T93905-32N-T3-F7，B3T93906-40F-T4-F7，
B3T93906-50F-T4-F7，B3T93906-65F-T4-F7，
B3T93906-80F-T4-F7，B3T74907-15K-L5-F8,
B3T74907-20K-L5-F8,B3T74907-25K-L5-F8,
B3T74907-32K-L5-F8,B3T74908-40K-L6-F8,
B3T74908-50K-L6-F8,B3T74908-65K-L6-F8,
B3T74908-80K-L6-F8,B3T74909-15K-L7-F8,
B3T74909-20K-L7-F8,B3T74909-25K-L7-F8,
B3T74909-32K-L7-F8,B3T74910-40K-L7-F8,
B3T74910-50K-L7-F8,B3T74910-65K-L7-F8,
B3T74910-80K-L7-F8,B3T74912-40K-L7-F8,
B3T74912-50K-L7-F8,B3T74912-65K-L7-F8,

B3T74912-80K-L7-F8,