How to do the sewer pipe on a camper trailer?

You need to buy a bunch of pluming stuff for trailers. There are pipes that have gates/valves inside that you can open and close to drain the grey and black water tanks. While you are waiting for one of our more knowledgable plumbing people to answer your question in detail. Take a browse through the vintage trailer supply plumbing stuff on the link below.


www.vintagetrailersupply.com/category-s/210.htm

You mean a real flush toilet, like from a house? Gonna take a whole lot of water to get everything through the hose to the sewer hookup...

A cup of water won't be nearly enough to flush everything down the sewer hose. You'll end up with a very nasty hose. Sewer hookups are meant to be used to dump a well-filled tank with a whole lot of water in it so it all goes down the pipe at once, not to be kept open constantly. Think of your house, how much water it takes to flush through a smooth sewer pipe. Those accordion sewer hoses for campers are harder to flush through because of the accordion folds.

As I understand it, normally people dump their black tank, then close the outer valve and open the grey water tank drain so that the grey water goes up the black tank pipe and rinses it. Then the outer valve is opened again to drain the grey water to rinse out the sewer hose.

I don't see a way for it to work, using a sewer hookup without a tank, unless you pour gallons of water into the toilet.