I created this to make it easier to clean my ball lock adapters. This will fit on a gas or beer post and keep it open so that water or cleaning liquid can pass through. It can also keep the adapter open so it dries completly.

I've now added a second model that does not lock, this can be useful if you want to open the valve without engaging the ball-lock.

Print with standard settings in PLA or PETG. 

I can share the model from Fusion 360 if there is an interrest.