When I got my VTDP I never really had "great" water pressure, in fact I preferred to just use the water pump as that always, for the most part, gave better pressure internal to the coach. I do use a quality pressure regulator set to 50 or 60 psi. I typically only see 30-40 at most CG's, only few have been high pressure above 40-50'ish. I figured that was normal so life went on.
With my winter wet bay project to install Drainmaster electric gate valves I ended that project by installing the setup from the http://rvwaterfilterstore.com
per Jerry Davis and others I believe I learned of this from. It's pricey but if you look at the yuck in the house filter after not so long city water is purely disgusting and I wanted better filtering. In fact I change my house filter(s) quarterly, if you go longer than that well good luck with that yuck. I wasn't impressed with the water pressure, about the same as before, maybe slightly worse. I had a leak at one of the fittings so I removed the filter housing to seal it with some paste. I was dog sitting my mothers dog, part border collie, who was on a chain in his harness and I walked around the coach to check on him and he was one bite from chewing through his harness to escape! I dropped the water filter housing and cracked it chasing him before it was too late. Bummer! Well, sometimes good things come of this.
Instead of ordering another one of those expensive overpriced contraptions from RV Water Filter store I decided to check ole trusty Amazon! I saw a few options but found https://amzn.to/2K5L035
. I sure wish I would have looked here first, it's half or less the cost of RV Water Filter Store. This one has better fittings which are garden hose (3/4" connections) making it far easier to swap with Newmar's setup vs. the 1/2" fittings RV Water Filter store uses for some unknown gastly reason!
Okay, getting to the point. THIS water filter setup, not sure why, has AMAZING water pressure. In fact I haven't needed or used my water pump AT ALL since installing this elcheapo dual filter setup I got from Amazon. The quality is great, the fittings are easy, no leak, and again, something with the design of this system yields much better water pressure. In the past I'd have the water pump on and let it decide if it needed to to handle the demand. Not anymore! Powerful shower, steady flow everywhere, this is a great water filter setup and inexpensive. I'm using a sediment filter first inline then the carbon 2nd in line that I got with my RV Water Filter store setup but the point is you want sediment first then carbon second.
If you have not so great water pressure AND you want to have a better filtration system, consider this one.
I should also note I'm using a REMCO AES Aquajet 3.4 gpm pump which is the proper gpm for my coach.
Aquajet – Remco
Love this pump!