We use an adjustable regulator just because of the varieties of water mains we deal with. We have a gauge at the regulator, before water filter and after water filter, all being outside. That said, we still keep it around 40 psi.
John and Rebecca Dickson
Emma-8 / Little John-5 / Iva-1+
2013 Ford F-350 Lariat FX4, CC LB PSD, DRW
2015 Jayco Jay Flight 28BHBE (#8)