I have traced our plumbing on our new-to-us 1979 Bigfoot
and it appears that:
- the toilet is the holding tank for both the kitchen sink greywater and the toilet blackwater
- there is a vent t'd into PVC between the toilet tank and the kitchen sink which vents on the roof
- the pipe for the fresh water for the kitchen sink t's off with a nonreturn valve to the toilet for flushing
- there is a drain coming out of the bottom of the trailer with a cap and a t handle connected to the side of the cap body
It is the drain that I dont understand. It looks like it just dumps everything out? How do you dump it without the grey/blackwater going all over the ground? As it looks like a big open pipe that would dump unassisted, what is the t-handle for?
Here are pics of the toilet and under trailer drain cap.
Thanks in advance! This is my first trailer.