Outside sprayer

[Russellvh]

The writing on the inside of the “flap” just refer to draining if freezing weather.

No valve, I’m aware of, just a hookup. Here’s a picture of the full hose.

 

[old timer]

Have you tried to ask a forest river dealer how much water to expect, and if the quick disconnect on the line is compatible with the male end on the blue hose,I would start with taking off the trigger sprayer ,then plug back in if no pressure I would try to remove the quick disconnect from the line. But is it possible that blue colored hose is for something else.
If someone else has had the trailer, I would not take it for granted that the two parts go together. I hope this helps .

 

[Fish]

The writing on the inside of the “flap” just refer to draining if freezing weather.

No valve, I’m aware of, just a hookup. Here’s a picture of the full hose.

View attachment 22924

There's a valve somewhere.