I have a reliance 7 gallon water container.<br><br>I cut off the original spout and tapered it so a 3/4 inch PVC pipe would slide over it, making a stem to the bottom of the tank Friction fit, no glue. Exiting the top of the screw cap is a barbed fitting to my water line.<br><br>I also have a check valve at the very bottom of the stem. I had found that when i had hand pumps, even with the built in check valve on the pump, it would drain down, and numerous pumps would be required to lift the water before any would exit the pump. The check valve stopped this annoying behavior. I do not know if it is necessary with the electric pump, but I see no need to experiment.<br><br>I now have a Jabsco on demand 12v pump, and utilize it not according to the directions, which say to attach it directly to the bottom of the tank. I basically put it on the floor at the same level as the bottom of the tank. When refilling the tank at a filtered water vending machine and rehooking the lines, I need to pressurize the tank to prime the pump, though putting my lips over the faucet when it is on and sucking works too.<br><br>I have my air compressor right next to my tank and use that and a tapered fitting to pressurize the tank slightly to attempt to retain some dignity when priming the pump.<br><br>My sink just drains to the ground below. No grey water tank, and I rarely let anything go down the drain, or if I do, I put a catch basin underneath it, unless it is just clean water with no consequence to visible wetness. My tank is for filtered drinking water, not washing dishes. For that I use my sun shower and a catch tray.
