Results for "pex"

According to my screaming every morning, there's this scalding burn followed by an icy shock sensation hitting my back in my RV shower. There's no middle ground - it's like my water heater has anger management issues.

I'm shopping for a thermostatic mixing valve to save myself from daily temperature shock therapy. I keep seeing mechanical models like the Symmons Temptrol and Phoenix PF213200, but honestly have no idea if they're any good. And don't get me started on those fancy digital ones like the Kohler DTV+ - they look amazing but I'm guessing they're about as RV-friendly as a pet elephant.

Anyone know which thermostatic valves actually work well in RVs without requiring me to rewire half my rig or sacrifice my firstborn to the plumbing gods? …more

After hearing my RV dealer call these thick kitchen cabinet bottom boards "industry standard" while my mechanic buddy insists they're just wasteful space-stealers, I'm completely confused. I've been doing a complete remodel to maximize storage space, but I'm shocked at the poorly designed layout.

The cabinet bottom board is a ridiculous 2 inches thick - that's eating up 10% of my entire cabinet height! Even worse, the drawer cabinet only has about 4 inches of usable space on each side because of how the PEX water lines are routed. It's like they just threw those lines in there without any thought to space efficiency.

I keep hearing about how amazing modern RVs are, but this is just terrible design. Is there any way to actually fix these issues? Can I modify the cabinet bottoms to be thinner and reroute those PEX lines properly? I really need to reclaim this wasted space but I'm not sure where to start or if it's even possible to address both problems. …more

Last week my pressure regulator started reading a solid 40 PSI on city water but my water pump keeps cycling on for 5-6 seconds when everything says it should stay completely off. When I connect to city water, my water pressure regulator shows a solid 40 PSI, which should be plenty, right? But here's the weird part - my water pump keeps kicking on for about 5-6 seconds then shuts off, even though I'm connected to city water and the pump switch is supposed to be off.

The really frustrating thing is that the pressure feels weak throughout the RV, with specifically the bathroom sink and kitchen sink seeming low, though the shower has good pressure. I've already changed out the intake/check valve and don't currently have a filter in the system. I can see the pump running while on city water, which I know is not normal. I noticed the kitchen and bathroom sink screens were plugged - which might explain some pressure issues - but now I'm wondering about the toilet's low pressure. Could there be a screen in the toilet line I'm not seeing?

I've been full-timing for two years and never had this issue before. What should I be checking for? I'm handy enough to do basic repairs but need to know where to focus my troubleshooting efforts. …more

Got what's probably a dumb question, but why do I have like three different types of PEX fittings in my RV and which ones should I actually be using for repairs? The current setup has what I believe are crimp rings on the PEX lines, but I'm seeing different types of fittings available and I'm confused about which approach is best for a DIY repair.

I've been looking at compression fittings, push-to-connect options like SharkBite, and traditional crimp rings, but I'm not sure which system actually works with RV PEX plumbing. Some of my connections are also threaded at the water pump and manifold areas, and I keep seeing references to FIP connections but I'm not entirely clear on what that means in the context of RV plumbing.

What's the difference between these connection types for RV PEX systems, and which option would be easiest for someone doing their own plumbing repairs? I want to make sure I'm using the right fittings and tools before I start tearing into my water system. …more

Nobody can explain why my pressure gauge reads 150 PSI at the Atwood 90029 mixing valve when every manual says it should max out at 125 PSI. My Atwood water heater has been sitting unused for about 8 months, and now I've discovered the mixing valve (part #90029) has developed a slow drip.

I'm wondering if this is something I can fix myself or if I need to replace the whole valve? I've heard something about O-rings going bad during storage, but I'm not sure if it's worth trying to rebuild it or just bite the bullet and get a new one. Any advice on the best approach would be really appreciated! …more

Turned on my water pump this morning and there's that unmistakable musty smell wafting from behind the fridge where my 1999 Class A's leaking Dometic 10-gallon water heater sits. I've got the mounting bolts out and can wiggle it a bit, but can't pull it far enough to get at the water and propane connections on the back.

Really hoping I don't have to yank the entire refrigerator just to swap this thing out! I'm thinking maybe I could disconnect the propane line from the front and push it through, but those water lines are probably gonna be the real problem. Has anyone figured out a way to get these units out without the massive headache of fridge removal? Maybe working from the exterior compartment somehow? …more

Got this annoying water pump vibration in my RV and can't afford a service call right now — any way to fix it for under $50? Right now I have 1/2" PEX connected directly to the pump discharge, but I've read that's not the best setup and can cause vibrations throughout the system.

I'm thinking about installing one of those braided stainless steel supply lines (like the ones used for household faucets) right after the pump to help dampen the vibrations. The thing is, most of the braided supply lines I'm seeing are 3/8" inside diameter, while my current PEX is 1/2".

I'm worried about creating a bottleneck that might hurt my water pressure or flow rate. Would switching from 1/2" PEX to a 3/8" braided line right at the pump discharge significantly impact my water flow? I don't want to solve the vibration problem but end up with weak water pressure throughout the RV. Any guidance would be really appreciated! …more