Gearbox and hand wheel completed!
They are separate from the wafer valve body itself to allow more flexible orientation. To go with it, i completed a fairly “worn out” hand wheel for it, it has a fairly long shaft for flexibility, and you can stick it on either ends of the gearbox (both ends of the gearbox are closed caps for this reason), or even both.
The wheel is also separate, so you can remove it entirely, or script it for rotation.
The gearbox has a small circular window on the side, unwrapped to make it easy to “slide” a texture across it, can be useful for an indicator.