tubing puzzle

I'm running liquid through a very small tube and want a way to remote control close the tube off in the middle. Perhaps with a clamp that i can remote control? any suggestions?

Is the tubing flexible enough and the pressure low enough that you could use a servo to pinch the tubing to shut it off?

How about something like this pipe clamp , with a motor to turn the screw?

Try putting "solenoid pinch valve" into your favourite search engine