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5 Simple Steps to Empty the Black Tank
1. Get Gloves
When cleaning out the black water line, some individuals purchase a box of disposable gloves and use a fresh pair each time. In fact, I advise using a set of heavy-duty plastic work gloves similar to those you’d use for cleaning. They are also available that are made exclusively for RVers. Make sure they are also the ones that extend a little bit up your arm. These are flexible, comfortable, and simple to clean off.
Start with the Black Water
Make sure all of your connections are very snug on both ends of the hoses before you pull any valves. Next, gently pull open the valve on the black water tank. There will be a swishing noise. Your toilet’s waste is what is passing through the hose at that moment.
3. Empty the Gray Water Second
Once the black water line stops running water thru the hose, pull the grey water valve. This is the water that comes out of your sinks and shower. You run the gray water AFTER the black water because it not only eliminates the waste but also cleans the hose.
Flush and Clean the RV Black Tank, Shut the Valves
Use a tank wand in the toilet or a hose to connect to the black tank flush. Run water until clear. Once all the tanks are completely cleaned out, you’ll want to shut the Black Water valve first and then the Grey Water valve.
Hose Down the Hose
Some recreational vehicles have a method for flushing the sewer line. If you don’t have one of those, you can just use a standard hose to wash the sewer hose down if you feel it needs it. Keep your sewage hose connected the entire time you’re camping, pay attention to the gauges on your tanks inside the RV, and when in doubt, flush your tanks.