Dr of BBQ
The union is a screw type – so if needed, I can unscrew the pipes and stick a hose up there and rinse the whole thing out.
Guys you should have a shut off right at the tank. No matter how careful you are in what goes down your sink drain, the Chef is correct your going to get the drain line clogged. So put a “T” straight out of your tank the points up.It should be tall enough that what ever volume of waste water remains in your tank will equal out with the pressure in the “T”. Then put a standard garden hose PVC threaded fitting and finally a screw cap on the top of the “T”. After that you should have a valve that can open or close your entire waste water line.
Then if you get a clog just inside the tank (where I get them) you can shut off the valve and unscrew the cap on the “T” and run water from a hose to unclog the tank.
Or if your clogged futher down stream leave the valve open and again use the preasure from a standard water hose to force out the debris.
wish I could draw this out for you to make it simpler to understand.