Fresh water AND grey water combined?
Hi everyone. Does anyone know if both tanks can be combined? Just using 40 and 30 as examples, dry camping can be extended for additional days from a fresh water perspective. Louie
Forum Discussion
I'm confused. Here is what I'm guessing at, and I have to split this between two scenarios:
1: The OP wants more fresh water, so wants all the wastewaster to dump to the black tank, and convert the gray water tank into another freshwater tank.
2: The OP wants to combine the grey and black tank.
I'd not even go near #1. Legal liabilities aside, it drastically kills the resale value of any trailer. Instead, I'd either buy bladders as described above or jugs of water (five gallon are decent, but some people may not be able to carry that much, so 1-2 gallon jugs may be an alternative.) Then, store those containers on a hitch mounted cargo rack, in the bathtub, or wherever. In a pinch, you can get RotoPax pack mounts, install those on the back or top, and use those for fresh water storage.
With my current setup, if I needed large amounts of additional fresh water, I'd buy a tank for the pickup truck, then use a 12 volt battery and pump so I can move water from the tank to the RV's fresh water inlet. If I needed 10-20 gallons, I'd just use five gallon jugs and pour them in by hand.
For option #2, this can be easily done. Buy a Valterra twist on valve, (CW#27868), install that, then pull the valves on both tanks. They will equalize. Then push the valves shut (so if the twist on valve gets bumped off, it doesn't mean a mess on the road.) I'd rather not have black water and its solids go in the gray tank, but if someone wants both tanks to act together, this is the way to do it.
1: The OP wants more fresh water, so wants all the wastewaster to dump to the black tank, and convert the gray water tank into another freshwater tank.
2: The OP wants to combine the grey and black tank.
I'd not even go near #1. Legal liabilities aside, it drastically kills the resale value of any trailer. Instead, I'd either buy bladders as described above or jugs of water (five gallon are decent, but some people may not be able to carry that much, so 1-2 gallon jugs may be an alternative.) Then, store those containers on a hitch mounted cargo rack, in the bathtub, or wherever. In a pinch, you can get RotoPax pack mounts, install those on the back or top, and use those for fresh water storage.
With my current setup, if I needed large amounts of additional fresh water, I'd buy a tank for the pickup truck, then use a 12 volt battery and pump so I can move water from the tank to the RV's fresh water inlet. If I needed 10-20 gallons, I'd just use five gallon jugs and pour them in by hand.
For option #2, this can be easily done. Buy a Valterra twist on valve, (CW#27868), install that, then pull the valves on both tanks. They will equalize. Then push the valves shut (so if the twist on valve gets bumped off, it doesn't mean a mess on the road.) I'd rather not have black water and its solids go in the gray tank, but if someone wants both tanks to act together, this is the way to do it.
