mtofell1 wrote:
Figured it out and feel pretty dumb. I relocated the city water connection to the back of the RV for ease of connecting and when I first changed the pump it was hooked up (but house hose off). Today I had unhooked the hose and it was spraying water back out my new hookup. I'm now assuming there must be an anti-backflow valve at the stock city water connection.
The odd thing is the old pump was doing the same thing long before I moved my city water hookup (this is why I swapped the pump). Anyway, all is well.... for now. Thanks for the replies everyone.
One of the items in my post
City Water inlet has a check valve to prevent back flow from RV into City Water System when using the pump
Pump has an internal check valve to prevent back flow thru pump when using city water