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Old 11-14-2014, 11:44 PM   #1
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Unhappy Help to identify leak - hot water pressure valve?

Can someone help us with what this leak is (photo attached)? The park here in Houston was going to turn off the water last night because it was freezing so we filled our fresh water tank. Then this leak happened. We turned off water to the camper last night and then on again today and it happened again. Water heater pressure valve? Thanks!

Marcia & Jordan
2013 RE
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Old 11-14-2014, 11:45 PM   #2
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That should be overflow to the fresh water tank.
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Old 11-14-2014, 11:47 PM   #3
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Yep, good news, it's not a leak :-) Just the overflow to your freshwater tank. No worries.
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Old 11-15-2014, 12:02 AM   #4
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That's good... but why would it keep overflowing? Leaking all down the block!
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Old 11-15-2014, 12:04 AM   #5
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Once engaged, sometimes it creates a siphon action and will empty a lot of water. Other owners have complained about this before. We haven't had this happen, I think they may have fixed the problem (probably shortened the hose or something). I know some people put a valve on the end of theirs. We might do that also.I can't really think what the actual purpose of it is... I am sure someone much smarter than me will help with that!
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Old 11-15-2014, 12:12 AM   #6
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put a pex valve on the end of it and only close the valve after it start spilling out. If you're real flexable, reach down there and blow into it. This should stop the siphon.

don't like the idea of an open hose leading straight to my fresh water tank without some sort of filter to keep the bugs out.
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Old 11-15-2014, 12:13 AM   #7
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Dave; can you share the REASON for the hose? I have never seen that before on other RV's, you just got a face full of water if you weren't paying attention... perhaps that is the reason?
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Old 11-15-2014, 12:21 AM   #8
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The red handle in the photo (see in the dark underneath.. BTW this loaded upside down) is where we were told the fresh water overflow was. We did have the syphoning problem already and they put a shut off valve on it there. It is closed and water is still coming out of that other tube. hmmm...
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Old 11-15-2014, 01:00 AM   #9
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Theresa & Todd,
For some reason, Redwood decided that two overflow hoses were necessary. Both are below the tank so when the tank is full, they will start to syphon as you state.


The purpose for the hose itself is to allow venting and overflow from overfilling the tank. Some closed systems (that fill from city water....not on the Redwood) can overfill the tank and cause damage to the tank and surroundings.


I solved the problem installing a pex valve on the one blue pipe. The one shown here, I routed to the vent on the back of the fill box. It is higher than the tank, thus allowing us to fill the tank completely for boon docking.


Ken
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Old 11-15-2014, 03:20 AM   #10
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Quote:
Originally Posted by TNTBaker View Post
Dave; can you share the REASON for the hose? I have never seen that before on other RV's, you just got a face full of water if you weren't paying attention... perhaps that is the reason?
I think it has to do with the size of the water tank. It's so big with a lot of weight, while driving down the road there's a lot of sloshing. But to be honest I have no idea.
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