Installing into permanent sewage question

[Jack L]

We will be putting a new Forest river Wildwood on our permanent RV site and sometime I would like to hard plumb the sewage system.

If any one has done this, how hard is it to remove the black and gray tank and do this?
Can you walk me through the process

jack L

[Herk7769]

I recommend you contact a qualified plumber to do this.

As I understand it, once you do things like removing wheels and axles, removing the A-Frame, and permanent connections to the site, it is no longer an RV but a manufactured home. Permits are normally required and it then becomes "Real Estate".

[kc8lvy]

Why remove your tanks? I have been full timing now for 2 years and I just go out once a week and dump the black tank and every 3 days on the grey tanks until I hooked mine up to PVC and put a trap in it now I leave my greys open until a day or 2 before I dump my black tank. I like to flush out the pipe good. if you want to hook up PVC instead of the slinky you can do it easily.
I just got a clear straight Flush King and ground off the nubs on the one side and got a 3 inch rubber coupling to connect that to the PVC pipe I made my own trap so I don't get any sewer gas and got a screw in connector for the park connection and I also put in a 3 inch rubber connector near the elbow in case I need to remove it. I went extreme with my trap I probably could have used 4 45s instead of 4 90s. Now its time to clean up my mess of hoses and make a nicer support for the sewer pipe.

[Bama Rambler]

Physically doing the work isn't too hard.

You'll have to access the inlet connections on the tanks and cut those loose. Once you've done that it's just a matter of finding connectors for the piping and running the piping to the sewer system.

[kc8lvy]

You fill have to install a regular house flush toilet if you remove your Black tank.

[fella10]

Originally Posted by kc8lvy

You will have to install a regular house flush toilet if you remove your Black tank.

kc8lvy is right, the larger volume of water is necessary to move solids down the pipe, .... the regular rv toilet doesn't have enough water with each flush to accomplish that, because it doesn't need to, it's only going to drop the contents into the tank below,..... sure sounds like you're putting a lot of work and cost on yourself that is certainly avoidable

kc8lvy's photos show the most common way that I've seen used on a permanent setup trailer,..... plus, its still a trailer, if your plans ever change, you're selling a regular trailer not a modified unit that would only be useful to a much smaller group of buyers,..... that's just my 2cents worth, best of luck on whatever you decide to do...........

[arpipeliner]

I use this set up when I hard pipe for winter.




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[poofam]

We full time in a 300 + campground and most the people run a 4" pipe I put a T fitting on mine so I can see what is coming out. I haven't seen anyone have a P trap on there's, I have 3 tanks in a Landmark, black, shower (gray), kitchen sink (gray). I leave the black and kitchen closed with shower open all the time with no problem. I also took a garbage can and cut the bottom out and put all my water connections in there with a trouble light for winter so lines don't freeze. Will try and post pics

[poofam]

Pics I hope


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[Wolverine 1945]

Originally Posted by kc8lvy

Why remove your tanks? I have been full timing now for 2 years and I just go out once a week and dump the black tank and every 3 days on the grey tanks until I hooked mine up to PVC and put a trap in it now I leave my greys open until a day or 2 before I dump my black tank. I like to flush out the pipe good. if you want to hook up PVC instead of the slinky you can do it easily.
I just got a clear straight Flush King and ground off the nubs on the one side and got a 3 inch rubber coupling to connect that to the PVC pipe I made my own trap so I don't get any sewer gas and got a screw in connector for the park connection and I also put in a 3 inch rubber connector near the elbow in case I need to remove it. I went extreme with my trap I probably could have used 4 45s instead of 4 90s. Now its time to clean up my mess of hoses and make a nicer support for the sewer pipe.

I am very surprised that waste could make it thru that P trap ???

[DouglasReid]

Im with those who just connect the RV plumbing with PVC (or ABS if that is what is used in your area). It is easier, faster, less expensive and has the added benefit of being easy to unhook if/when you decide to move or sell the camper.
All upsides and no downsides that I can see.

[MillerTime]

Here is our set up. It runs to a septic tank we share with another camper.
We leave our shower gray tank open when we are there. With 3 kids, we have to. Plus our septic tank system can't handle us dumping all 5 tanks at once.
We have a short piece of sewer hose that connects to our pvc.

[Jack L]

All looks good, but you must use a ton of chemicals in the tank.
The trap will take care of the sewer gas but what about the tanks gases


Jack L

[Wolverine 1945]

Originally Posted by MillerTime

Here is our set up. It runs to a septic tank we share with another camper.
We leave our shower gray tank open when we are there. With 3 kids, we have to. Plus our septic tank system can't handle us dumping all 5 tanks at once.
We have a short piece of sewer hose that connects to our pvc.

I guess I have to wonder what type of septic tank you have that won't handle dumping 5 tanks ???

[MillerTime]

Originally Posted by Wolverine 1945

I guess I have to wonder what type of septic tank you have that won't handle dumping 5 tanks ???

Most tanks are 1000 gallons. If i dump 200 + gallons it overloads the leach lines that are designed to handle a few dozen gallons an hour. If done consistently, the solids or the top scum will be forces into the leach lines and render them useless. They are only designed to handle liquid.
That's why septic tanks need to be pumped every few years, and why dumping large quantities into them in a short timeframe will ruin one.

I've lived with septic tanks my whole life, as well as having a heavy construction company that serviced and installed failed systems some times.

[Wolverine 1945]

Originally Posted by MillerTime

Most tanks are 1000 gallons. If i dump 200 + gallons it overloads the leach lines that are designed to handle a few dozen gallons an hour. If done consistently, the solids or the top scum will be forces into the leach lines and render them useless. They are only designed to handle liquid.
That's why septic tanks need to be pumped every few years, and why dumping large quantities into them in a short timeframe will ruin one.

I've lived with septic tanks my whole life, as well as having a heavy construction company that serviced and installed failed systems some times.

Yes that all makes sense !!!
Maybe you could dump them over a # of days ???

[MillerTime]

Originally Posted by Wolverine 1945

Yes that all makes sense !!!
Maybe you could dump them over a # of days ???

Thats what we do. We leave the shower, gray tank open though, to help with not having as much water to dump at one time. Just while we are there though. All valves are closed when we are gone.

[MillerTime]

Originally Posted by Jack L

All looks good, but you must use a ton of chemicals in the tank.
The trap will take care of the sewer gas but what about the tanks gases


Jack L

You will have vents on all your tanks. Plus all the gray water connections have their own p-traps. The toilet is the only one without a p-trap. That's why its essential to leave water in the toilet bowl.

Also, we drop a tablet down each of the 2 black tanks after dumping the tank, so thats every weekend that we use it on 1 tank, and about once a month for the other. The gray tanks we don't use chemicals in unless we have a slight odor. Then we just add some pinesol and add some more water.

[jpbrough]

I agree. use your PVC and fern coats( rubber coupling) to hook up. Don't get rid of your tanks.

[Jack L]

Some one needs to tell my septic tank that !
It is now 30 years old, and never has been pumped


jack L