How to motorize a LEGO Pneumatic valve? I am working on a project that requires remotely switched LEGO valves, and I tried many designs I found, and none of them worked due to the valve causing too much resistance. Does anyone have a remotely switched valve design that fulfills the conditions below?


It must be tested and work.
It must use only PF motors.
It must not use 32449.
I tried many designs I found


A quick Google search resulted in the following designs. Have you tried them all?

Sariel's Autovalve:

Philo's pneumatic valve:



Sariel's Servo Valve:

Tamas Juhasz's small autovalve with compressor:

Technic-Dragon's Compact Pneumatic Autovalve:



Bonus entries, not using exclusively PF motors, but could be adapted to:

Conchas' Micromotor valve:



Pneumatically controlled valve from the B model of 8868-1: Air Tech Claw Rig