We have a 2015 precept 35 un my question is is there a built-in water regulator in the system it has an inline filter should I remove that cartridge to maintain water pressure between 45 and 55
No built in regulator. But why remove the filter? I have a screw on brass regulator (Amazon $12) on the hose end the connects to source. Takes no extra effort and keeps me at 45psi which Jayco recommends.
Be sure you use a regulator. Some RV parks have really high pressure and it will damage your water distribution manifold among other things. Shoot for 40-45 lbs max.