Cam Lock, Dry Breaks
When pumping and evacuating used fluids, it is critical that fluids such as oil and anti-freeze are not accidentally mixed in storage tanks. This is the main reason we manufacture green drains for anti-freeze and black for used oil.
We believe the best way to prevent this is to have 3/4” connectors on the anti-freeze side and 1” connectors on the used oil. This way it is not likely to have fluids contaminated.