Plastic Drum Standpipe Biodiesel Wash Tank

A favorite wash tank for many is the plastic drum. If you choose the 'natural' color, you will be able to see the biodiesel and water through the drum. Poly drums are easy to find and dirt cheap.
The special part that makes a standpipe possible in plastic drums is the standpipe itself. The standpipe is an 8" black pipe nipple that has had the threads cut in them three inches long. It screws into a bung containing 3/4" female threads. Most of the hardware stores have pipe thread cutting machines and can cut the threads long if you ask them. Often it will be at no extra charge. It is hard on the dies to make the extra long cuts, so there might also be an additional charge.

If you screw the bung all the way to the end of the threads it will seal better.

Item Qty Description A 1 Fine thread bung reducer B 1 Coarse thread bung reducer C 1 ¾" standpipe D 2 ¾" black elbow E 1 ¾" x 4" pipe nipple F 2 ¾" x 12" pipe nipple G 2 ¾" brass ball valves H 2 ¾" PVC insert adapters