Filters do not reduce the pressure at all. They only reduce the volume (flow rate). You definitely should use a pressure regulator……………….
It not only protects the camper, but also your water hose. I have seen many a hose "spring a leak" when out in the sun due to high water pressure…………..
First off if your filter is clogged up you not only will see a flow drop but as soon as you turn on a faucet- shower etc.. your pressure will drop off. The pressure will only stay the same if there is no outlet on....
Second, usually people mount the pressure regulator at the trailer water entry point. That won't save the hose unless you mount the pressure regulator at the supply faucet.
We have found out West that many campgrounds required (request) pressure regulators because their pressures were so HIGH..
Bill B. (S.E. Michigan)
2014 Keystone Cougar High Country 321RES (was 2007 Eagle 322FKS)
2007 Dodge Megacab CTD