I agree with Flyguy and Campingcpl!
A 90 degree adapter takes a lot of the strain off the connection and I also use a water filter.
I found that a simple whole house filter removes all the dirt, sand, debris, etc. that may be incoming. I realize that it would seem that if you are connected to a "city water system", you should have clean, clear incoming water. Guess what, this isn't so and I have seen the results with my filter.
The filter is a large clear housing type with a cheap filter insert. I got it at Lowe's for about $25 and attach it to my coach with a bracket available at Camping World.
http://www.campingworld.com/shopping...r-holder/19939.
It is not meant to filter the water for drinking (bacteria, taste, etc.), I just want to filter out all the schmutz that comes through the system.
If you want pictures let me know and I'll try to add them to the thread.