Sewer solution, Clean Dump and other macerator pumps are a great addition, especially as you're fulltiming and may want to camp where there are no hookups.
We used one on our last coach as we could only go 2 or 3 days without emptying the tanks. With the new coach, I put in a clean-out next to the coach and use a short sewer hose while the RV is parked. It has much larger tanks and we can go about 5 to 6 days without dumping.
BTW, our flex sewer hose (happens to be RhinoFlex
) has been used constantly almost two years without failing. I support it with plastic gutter on a 10' 2X4 to give it the proper slope, probably protects it well too
If you want run rigid PVC DWV pipe from an existing clean-out to the coach, I'd still recommend using the flex hose for the last several feet as this will make it much easier to move the coach (rigid pipe means you must park the coach in exactly the same spot each time
). Also. the clean-out obviously needs to be located downhill from the coach.
Hardware stores or home centers will have the pipe, male and female adapters you need to complete this job. I'd do something like this (starting from the clean-out going to the RV):
Male threaded to slip adapter to 90 degree ell to short pipe to rubber coupling Flexible Rubber Coupling with Hose Clamps - 3" x 3"
(so you can unscrew the connection to the clean-out) to long lengths of pipe (connected together with slip couplings) to 90 degree ell to female threaded to slip adapter. Your normal sewer hose threaded elbow would go into this adapter. You can use all 3" or use larger if the clean-out you are using has larger diameter threads.
Make sure to properly support the pipe and give it the right slope (a quick internet search showed 1/4" per foot for 3", less for larger diameter pipe). Of course, all slip fittings must be glued after you test fit it (the rubber couplings will use hose clamps to secure them to the pipe).
If you really want rigid pipe into your black tank compartment I'd suggest using another rubber coupling on that end to make hookup easier. Also Valterra makes a Bayonet to threaded adapter you'll need, here is a link to a retailer that carries it: VALTERRA BAYONET HOOK HOSE ADAPTER