Runaway

[Mole1119]

I have a x-valve that i am trying to tune.
It worlks great with the ULT but when I swap to a standard on/off and air it up goes into runaway and i have to degas it. The regular on off currently has the standard on/off pin that comes with it. I also have one size smaller and larger that i have not tried yet.

I am using a preset crosfire tank.

Any tips?

[Ando]

Your on/off pin might be 2 short or your missing 1 or both of the top on/off orings.