Fluid control valve and ball holder

A fluid control valve comprising a valve body (1) and a magnetic ball (3), the valve body (1) comprising a first air passage (11) and a second air passage (12), a first valve air passage (13) defined between the first air passage (11) and the second air passage (12), the valve body (1) having an annular blocking portion (14) formed to an inner wall thereof and located between the second air passage (12) and the first valve air passage (13), a second valve air passage (141) defined through the annular blocking portion (14) and communicating with the first valve air passage (13), the magnetic ball (3) movably located in the first valve air passage (13), a ball holder (2) having a mounting portion (21) and a connecting portion (22), wherein the connecting portion (22) has at least one air passage (221), the mounting portion (21) is provided with a magnet piece (24), and the connecting portion (22) is connected to an inner wall of the first air passage (11), the magnetic ball (3) is positioned between the annular blocking portion (14) and the mounting portion (21);

• the ball holder (2) having a side through-hole (23) between the mounting portion (21) and the connecting portion (22), the side through-hole (23) respectively communicating with the first valve air passage (13) and the at least one air passage (221), the mounting portion (21) facing the annular blocking portion (14), and
• wherein when the magnetic ball (3) blocks communication between the first valve air passage (13) and the second valve air passage (141), the side through-hole (23) does not communicate with the second valve air passage (141), and the first air passage (11) and the second air passage (12) do not communicate.