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Post by johnbasildisco on Jan 29, 2019 10:38:50 GMT -8
I'm working on a ground-up internal redesign of a 64 Aristocrat someone gave me. Haven't done any plumbing before, I've done a bunch of research but I want to make sure I'm not missing something important.
I'm planning for shore water in, (with a incoming pressure regulator) with a y branch to the faucet and the toilet. I'd like to use flexible hose from the Y to the toilet and faucet.
From the faucet, it goes down the drain thru a hepvo trap and into an 8 gal grey water tank. (small, but I can't find anything in the 12-15 gal range in the design I want, and I don't want more weight than that on the floor where I'm putting it) The grey water tank will have a 1 1/2" vent thru the roof, and a 3" outlet with a valterra sliding valve, and a 3" valterra bayonet outlet, w/ a removable cap for a standard garden-size hose. Using a 3" outlet because I was reading that flushing grey water thru the sewer hose is good for cleaning it out.
From the toilet (using dometic 310/311 model from vintage trailer supply) it goes directly to an 8 gal black water tank. The black water will have another 1 1/2 inch vent going thru the roof next to the grey water vent. Same 3" outlet setup as the grey water. I think for boondocking I can flush the toilet by manually adding water to the bowl.
Not planning to install a fresh water tank or water heater but might add them later. I'm planning to get all ABS tanks, fitting, etc from vintage trailer supply, cut the fittings holes in the tanks myself and acetone bond everything as suggested.
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Post by johnbasildisco on Jan 29, 2019 16:19:27 GMT -8
Update: I found a 12 gallon tank for grey water and cheaper valterra stuff on etrailer.
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Post by vikx on Jan 29, 2019 20:23:06 GMT -8
Good for you finding bargains. I like Vintage Trailer Supply, but for modern stuff, there's lots cheaper out there.
For the sink grey tank, I wouldn't vent thru the roof. You should be able to vent with an "under the sink" vent. It's a ABS cap with a rubber diaphragm and works pretty well. The less going thru your roof the better. I would skip the sink trap as long as you don't plan to connect the grey tank directly to a sewer. Just one more thing to go wrong. Our trailers are pretty simple; I like to keep them that way.
Your plan seems fine for now. Plumbing is very easy to upgrade so no worries about future changes.
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Ten
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70 Shasta 16SC + 1964 Airflyte
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Post by Ten on Jan 29, 2019 23:03:46 GMT -8
I have two concerns, and they are kinda the same... First, is there a particular reason for keeping the waste tanks inside, rather than draining through the floor to the outside? My biggest reason for asking is that, although you may never plan to overfill a catch tank, it can happen. If the tanks are outside on the ground, it is a lot easier dealing with the mess. It is also somewhat easier removing the tanks to dump them when the time comes. My second thought is about the capacity of the grey water tank, a small tank will fill up a lot faster than you may expect. For self-contained units, the math is done so that the capacity of the waste tank is safely greater than the holding capacity for the fresh water. It is a lot easier to lose track of usage with a shore water inlet than with a holding tank. Washing and rinsing even just a few dishes can add up quickly.
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Post by johnbasildisco on Jan 30, 2019 20:50:26 GMT -8
Thanks for the advice.
Mainly I think internal tanks will look nicer in practice.
I'm thinking of getting a float gauge for each tank, if I can find one that has the right fitting and depth specs.
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ruderunner
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Post by ruderunner on Feb 5, 2019 2:10:57 GMT -8
Ten, your concerns are valid but it seems to me that you're thinking of mobile tanks vs built in. I think the OP is using built in tanks.
As for inside vs under, that's a matter of ground clearance. Most vintage trailer sit pretty low and may leave the tanks too close to the ground.
The build I'm doing has lots of ground clearance so I'm going under to save floor space.
As for the vents, I see no reason they couldn't be teed together and have a single vent through the roof or side. You do want the black vent nice and high though.
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