Adj. water pressure regulators

I bought a Watts N55B years ago from either Lowes or Home Depot and still works fine, but is no longer made. It had both internal 3/4 inch pipe threads as well as external very sharp union threads. I added pipe nipples and tees with gages on both the inlet and outlet so I could monitor both the incoming and outgoing pressures.

I also added male and female garden hose adapters. I added j hooks to the trailer I beams so I could hang it and the water filter under the trailer and out of the sun. I also can connect into the near by cold water low point drain instead of the city water connection so there is no hose hanging on the side of the trailer.