We are plumbing a pool and are considering putting an actuated valve in a vertical orientation where the valve stem/actuator will be coming off the valve sideways rather than on top. There appears to be holes in the bottom of the actuator case and I don't know of they are to let any water out of the case. Don't want to let any water in if this is indeed their purpose.
Anyone have any idea if there is an issue mounting these actuators sideways vs up?
Here is a picture.

Anyone have any idea if there is an issue mounting these actuators sideways vs up?
Here is a picture.
