Position/Orientation of propane regulator?

[Innovate1]

Picked up a 2 burner cooktop for the RV that will be mounted in a countertop. The cooktop has a male fitting pointing down and the manual shows the regulator (secondary, not the main regulator from the tank) connected directly on it so it is vertical. I would like to put a 90 on the cooktop and mount the regulator horizontally. Due to limited clearance the vent would be pointed down. I looked up the maker and it's from China with no info on their site other than a picture. I did some searches but no clear answer. I saw a few answers that the vent should go down to prevent junk and water condensation from plugging it. It's covered so crud getting in especially under a counter is unlikely. If it really should go vertical I could put another 90 near the back of the cabinet but that's just extra fittings. Picture shows how manual says to mount. Black dot at top is vent. Outlet is at top.

 

[Firebrick43]

Vent needs pointed down so it doesn’t fill with water, especially in freezing weather. Other wise the diaphragm and spring don’t care in operation.

 

[Innovate1]

What's marked as a vent just looks like a lump of plastic in a hole. There is no obvious hole or place for air to escape although it may not completely seal. So is it ok to put the face seen the pic down facing the ground? Is the moisture from the propane gas or humidity in the atmosphere or are they worried about it getting rained on? The vent would be near the top the way they show it mounted - seems to go against the "vent should be down" comment here and seen other places. BTW it's Laite JY120NP.

This shouldn't see much freezing weather. I suppose it might sometime but extremely unlikely especially when in operation. The RV is kept in heated space in the winter and we don't go out in weather below about

 

[PoorUB]

Is the black vent, just simply a vent? Some regulators have vent limiters that restrict how much or fast they will vent. They are a plug with a check valve. If it is a vent limiter, then it needs to be mounted upright. If not, mount it anyway you like.

 

[The Cobbler]

vent pointing down will be fine ( and probably prefered)
the regulator itself doesn't care about orientation

 

[finn]

Vents are, or should be almost always mounted in such a way as to allow condensation or other liquids to escape. That means facing down towards the bottom.such that the weep hole drains.

I can’t think of any reasons there would be exceptions to that.

Electrical connections are, or should be designrd the same way. There has to be a way for the connector to drain. A connector on my tractor faced up, so it wouldn’t drain. Enough moisture wicked past the seal to corrode an always hot pin through electrolysis in 20 running hours, and subsequently fail the circuit.