Originally Posted by fdole
These photos and information are really great and I'm learning a lot. I plan to install a Vintage Trailer Parts grey water tank on my '68 Caravel. The photo shows (kind of) the trailer as I bought it. Someone has installed quite a large trap and some strange, large piping. All of this will have to be removed to accomodate the new tank, and I'm not sure how things should be replaced. Is a trap even necessary?
In the photo you can see that the black water tank valve is quite a bit above the level that the outer skin would be (if the skin were still there.) Does anyone know what this should look like?
Has anyone done this work on a Caravel?
The black tank on your Caravel is above the floor below the toilet. The waste value is at floor level. The handles is in the bumper. The trap is for the shower floor pan. A gray tank would have to ride below the shower pan. You can see that there is a skid to the left to protect the waste connection. Your really limited by the ground clearance in the rear section. But, up between the frame in front of the shower pan would be possible.
You could with alot of work put one behind the axle in front of the trap. Your only picking up water from the two sink drains and the shower base. A twenty gallon tank would be enough. Cut out all that crap out and get back to the 1 1/2 line that comes though the floor. Get a new 1 1/2 trap and a 1 1/2 santary tee and a 90 or two. Pipe the shower trap to the right (curb side) and pick up the 1 1/2 vanity. Get the 1 1/2 into a tank on the curb side. The tank would then drain to the street side and you would bring it around and tie it in to the four inch with some new fittings and a new 1 1/2 valve. When your there get rid of the old Thetford connection and get a modern one.
Your 1 1/2 runs from the kitchen sink to the rear it picks up the vanity and drops down to the shower base. You can see it under your vanity. The system needs gavity to work so you have to pitch the pipe down a little. This is were the problem is, you want the 1 1/2 in the top portion of the tank. The tank outlet would be at the lower end. It might work, but it would be very close.
Originally The 1 1/2 tied in below the sewer connection (Were the white cap is.) and went staight out to the ground.