Just got one on Sunday for FREE! Has the manual and had a bunch of extra tanks and reels 'n' such. The drain is missing any kind of a check-valve, so I am going to install one underneath the unit before it exits out the back. It's the only way I can see to have the tempering bath and the chemical recovery tank stay full. I'm wondering if anyone has this unit and can take some photos of the drain assembly. I have not been able to run it through a complete program yet b/c I'm still plumbing it and setting up the workspace for it. I know it's a long shot, but I thought I'd ask. Thanks!