Originally Posted by astrnmrtom
My Serengeti is in storage so I'm going from memory. The valve you are talking about is for filling your onboard water tank off the hose. Your pump should be turned off when filling the tank, then the valve switched the other way to direct the water into your regular plumbing, or getting water via the pump.
The inlet has a built in pressure regulator which can sometimes go bad, and this inlet is where the screened washer is. I check my screen every now and then because it's pretty small and get plugged easily. If yours doesn't have a screen you could have crud in the regulator. I had lousy city pressure in mine and I replaced the inlet unit which helped. Even then, my pressure isn't as good as it is with the pump. The regulator has a small opening which limits the flow. An inlet without the regulator is a different shape and I didn't feel like trying to make it fit.
hmm. well it did have a regulator on it, but maybe it is problematic. I doubt it however, as i also had one off my other motorhome and both worked the same. its odd. I guess I dont see how you can get pressure without filling the tank. Maybe thats how these work. My last winnebago, it was a seperate inlet for pressure from a hose, and a different one to fill the tank.
When that valve is UP, i hear water flowing into the tank. when i turn it to the right, the pump starts running (even when the inside switch is off) and still no pressure. its odd