Thanks, Stircrazy, I appreciate that. I didn't think about the difference between ABS and PVC, but you are correct. I'll consider using the wye, too, but what I was hoping for was to have a dump tank-like opening like at parks, but this is a good idea.
bit-time, this is what I picked up at Lowe's yesterday on the way to the property. I thought I'd mount it at the top of the pvc leading to the septic tank at ground level with a small, 2' square concrete pad around it. But Stircrazy does have a good point concerning a second entry into the drain for later use, although being out in the sticks and the projected use of the shed/shop that's going to be there after the 5th wheel will only be used for gardening, I was thinking about releasing any grey water either into a tank or just out into nature. This will be between two gardens my wife is planning. There will be so little use of a sink or shower (probably won't have a shower), that the drainage will be minimal. Thanks, guys! I appreciate your help! Lee
the thredded ends with the caps are what every campground I have been to uses as you thread your sewer hose on to it. the only other kinds I have seen are the metal lids that lift when you step on the ends comonly used at dumpstations, and tjust bare 3" pipe with a cap sticking out of the ground so no threads and you have to use a rock to hold your sewer hose in.
