...and I thought I'd share my observations with y'all.
First, it's a quality unit, and well thought out. It works just like it should.
Second, you'll need a Thetford to Valterra adaptor to hook it to your tank; if your trailer is laid out like mine, it will work better with about an 8" extension, so you can position it with the discharge hose pointing down.
It ain't real fast. You wouldn't want to use it with five people behind you in line at the dump station, but that's really not what it's for. IMHO, it's for those times when there's no other way to do it. If you don't need one now, you will some day!
You can buy a supposedly "second" quality direct from www.sewersolution.com
for $75, although I cannot for the life of me see a defect in mine.
I used 1" PVC pipe on the discharge - I had to pump the full 10' length of the discharge hose, thru 30' of straight pipe, up a foot and a half, and thru (3) 90 degree bends, and down into the cleanout at my house. Here's a couple tips on piping that will help you out considerably, I believe:
First, do not
use regular 90 degree elbows, as they add considerable flow resistance and will slow things down to a crawl. I use 1" PVC electrical conduit sweep elbows, which reduce the flow resistance quite a bit. Same stuff, same glue, more expensive, but they work wonders for the flow.
Second, if you'll be dropping into a cleanout, like I was, add an extension to drop a couple of feet down - this will let you take some advantage of a siphon effect.
Overall, I'm happy as a clam with it. It let me do something that would have otherwise been impossible!