A problem with RV faucets: The factory installed models are usually – to put it mildly – junk. But they are “RV” models – which usually means they are cheap plastic (the industry calls it “lightweight”), take odd connectors and parts, and usually when they break, can only be repaired with more “RV” parts. (That usually means more expensive!)
The real fix is to know what to do and how to do it, to replace these cheap faucets with better quality ones you can buy at your local home repair center. (When they break and you’re on the road somewhere, you just find a Lowes or Home Depot, instead of paying 3 times the price at the nearest camping center – assuming they have what you need.)
Not everyone is familiar with mating copper tubing to Pex tubing or knowing which connectors are needed to modify an installation like this – and if you’re unsure of what to do, chances are you won’t be able to do it laying on your back, contorted into a small space, working almost totally by feel. That’s why people pay me to do what seems simple – I know both WHAT to do as well as HOW to do it.
A couple of hours and this rig is ready to hit the road again!