Enthusiast III
To answer you question of pressure rise specifically and technically, it’s “not much”. Call me a smart ass here. But seriously, a quick google search of water heater t&p valves revealed a common relief of 150psi. That’s on a powered water heater capable of going from 48* water to 140* or whatever. The sun is not going to heat that pipe painted black that much, and even if it did the pipe is rated at maybe 160 working pressure and you have to derate 20% at it’s max operating temp of 140*, so 128 psi max. So if I hooked my compressor and 4 gallon tank that kicks out at 120 psi I might be over the specs, but still not close to bursting pressure. The OP has leaks sealed with silicone, so he’s unlikely to overpressurize.I was just looking at the original metal version of this. They integrated a automotive radiator cap... to vent excess pressure as it forms. Even has an explosion warning sticker next to that cap warning that it may explode if that safety cap fails.
Traveler III
The initial RoadShower had an 18 PSI radiator cap. The second model had thicker aluminum and 25 PSI. The current RoadShower models have a completely different industrial type pressure relief valve rated at 65 PSI, and a much stronger tank. The old tank with the new cap couldn’t stand up to the higher pressures.I was just looking at the original metal version of this. They integrated a automotive radiator cap... to vent excess pressure as it forms. Even has an explosion warning sticker next to that cap warning that it may explode if that safety cap fails.
Advocate II
Member III
Member III
I didn't even think of that aspect. Good point.Another concern would be the effect of UV on PVC
Member III
Enthusiast III
No, no, calm down, it’ll be ok, it happens to the best of us. I just try to stay “young at heart”, and fake my way through hanging with the cool kids.I didn't even think of that aspect. Good point.
I know the electrical PVC (grey) conduit at HD or Lowe's has something extra for UV stabilization. May be worth a consider for some folks.
EDIT: I just realized something horrible!!! I am officially an old man now. I just told someone "you might poke your eye out kid". This is a sad day. :(
Member III
No, no, calm down, it’ll be ok, it happens to the best of us. I just try to stay “young at heart”, and fake my way through hanging with the cool kids.
Seriously though, if the pvc did explode, it would be very very bad. Comes apart in lethal shards. I play with tannerite. I just don’t think it will in this case. I’d love to find a big chunk of aluminum pipe to make one but like the radiator cap idea.
Traveler I
Member III
I had the same thing in mind. Somewhere like down inside of the bed along the long wall. Out of the way when driving and looking back too. It just will have less gravitational pull though. Which is fine if the plumbing is built to compensate.I really like this idea but my only grip is having x amount of gallons of water mounted so high up.
I am going to attempt to build a short fat one or a solar shower with two tubes side by side mounted somewhere low and clever.
I'll sketch something up once I finish this garage project
Pathfinder I
Traveler I
Member III
Member I
Member III
Enthusiast III
Member III
Thanks, pretty sure I won't have that water freeze problem in Florida!I ended up putting a 12 volt mini pump which I plugged into 12v port in my dash. It worked great except when the temp dropped to 17 deg and the water froze.
I switched out the fitting on the mini pump so that I could adapt them right onto the garden hose connection. Sorry I don’t have a picture of the setup. I can look when I get home.