Water pressure

[Wsan0424]

My 2003 Jayco Granite Ridge has good water pressure when initially hooked up. City water pressure is good. But water pressure eventually decreases and it isn't city water pressure change. Do I have a valve that is deteriorating or something else?

[Robbbyr]

Are you using a regulator? Some are known to cause flow restrictions. Do you have an in-line water filter? Those too can cause a flow drop off if restricted. Is the hose connection valve open fully, does it flow consistently without your hose hooked up?

It seems you have a restriction, it is just a matter of identifying it. Start at the water source and move in until you find where the pressure drops off when flowing water.

[North of 49°]

Are you using a filter? That happened to me once and I tracked it down to the blue Camco in-line filter which was on its last legs. It had settled and was clogged, and let very little water through. Pressure was good at first, but quickly reduced to a trickle. Removing it from the equation solved the problem.