Originally Posted by fisherjdou
Put a new hot water tank in and it tested out fine. Disconnected city water supply to put on door and remove drain valve (replaced with plug so door would fit). Now have nearly no pressure past the city water pressure regulator. could it be blocked or stuck? Any way to blow back or release?
There is a screw at the top of the regulator, that permits adjustment, to a point.
Try that before anything else.
There is a check valve after the regulator, that could be blocked, or hung up. However, check valves normally leak instead of blocking, when they malfunction.