Vans with Cassette Toilets

[Davydd]

What situation is that where a black tank won't work? Usually it is because toilets are in the back of the van and there is not space to install a black tank for a direct gravity dump or coupled with the grey tank. The back is a better place to put the cassette because you don't have to install an access through the body of the van. Just open the back door for access. That makes the composting (misnomer) toilet popular as an option to the cassette where you also don't need a black tank. I didn't like the Jack Nicholson "About Schmidt" where you had to sit down to separate the liquid from the solids.

I like the black tank. It is less labor to dump and less frequent to dump as well. You can gravity dump with a 3" hose (low tech) or macerate dump with a 1-1/2" hose. I have a 25 gallon black tank instead of the 10-12 gallon most have. The black tank is not the decision to dump over filling fresh water (40 gallon) or dumping the grey water tank (25 gallon).

I put the toilet in the back behind the back axle near the center of the van, but not where you could open the back door to access it. The solution was a marine upflow toilet where you can put the black tank wherever convenient with more capacity than a direct dump tank. I naively and inadvertently challenged Advanced RV when I placed the toilet in the center said and didn't want a cassette or composting.

The marine upflow flushes similar to your home toilet and it macerates the waste (clumping mass in the tank) and pumps it up and over the back axle. I was wary of it at first and thought "what did I get myself in to" but really like it now. They put them in expensive yachts and ships. It's been reliable four years now though it operates with electricity. The name of our toilet company is Tecma. That's a solution rarely used in a van.