Here is a review on Amazon for the inexpensive Camco regulator. Interesting points made I think. "First off, I use one of these on my RV. It works great, and rare to find actual good-quality metal ANYTHING now days. It gets pressure below 50-psidepends on several variables as to how much lowertheir ad info is right though, always between 40-50 psi.
As for every one of the reviews I've read here on the 'negatives'I'd like to point out that this is NOT an anti-hammer reservoir, nor is it a filter. Nasty water at any RV park will most assuredly clog it up to where it won't workpre-filter between your camp connector and your regulator. That will fix the issue (or, replace your filter element then).
As for 'hammering' due to pressurethis is also a simple fix. Get an anti-hammer reservoir. You can 'rig up' your own, buy a 'house-type' anti-hammer at most any hardware store, or you can buy one like the SHURFLO Pre-Pressurized Tank (available on Amazon). It helps to buffer 'hammer' out of your water system. I find it to work best on RV's, because RV's use vaned-pumps for 'off-system' water, and you get a natural 'stutter' as a result. If you put a small pressurized tank in your system, the tank buffers that vaned-pump stutter, as well as acts like a anti-hammer to on-system water sources.
This is a really good product."