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The Daily Insight

How do you drain an RV GREY water tank?

Author

Nathan Sanders

Published Feb 09, 2026

How do you drain an RV GREY water tank?

To empty your holding tanks:

  1. Always empty the black water first.
  2. Wear rubber gloves at the least.
  3. Remove the cap that covers the holding tank outlets, and connect your sewer hose.
  4. Put your sewer hose in the dump hole, at least four or five inches deep.
  5. Secure it in place.
  6. You can now open the black water valve.

Who is the owner of Winnebago plumbing company?

Please choose a year from the menu at the left to start your search. Copyright Ó 2021 Winnebago Industries, Inc.

How are water drain valves on floating storage tanks positioned?

When an AST storage facility operator is asked how the water drain valves on floating roof storage tanks should be positioned, almost all sites will provide a different response, and their own unique rationale.

Where does the toilet water go in a RV?

The black tank holds all of the toilet water and its accompanying human waste. The grey and black tanks come equipped with vents that extend out of the roof of the RV. These vents prevent the unpleasant smells from building up and eventually entering back into the RV. Most of the modern RVs have an inlet to the black tank called a black tank flush.

Is the decision to keep roof tank drains open or closed?

The decision to keep roof tank drains open or closed is an operating Michael Sprung and Mark Rauch, EnviroEye, LLC, USA, and Chris Chase, InterOcean outline a newly developed system that can help operators to safely and effectively monitor floating roof drainage. F F

Please choose a year from the menu at the left to start your search. Copyright Ó 2021 Winnebago Industries, Inc.

The black tank holds all of the toilet water and its accompanying human waste. The grey and black tanks come equipped with vents that extend out of the roof of the RV. These vents prevent the unpleasant smells from building up and eventually entering back into the RV. Most of the modern RVs have an inlet to the black tank called a black tank flush.

Where can I buy Winnebago parts for my RV?

And don’t forget to check out our eBay store for great savings on a variety of different Winnebago parts! … … … … … … … …

Can a black water tank be installed in an RV?

If your RV doesn’t come with a built-in black tank flush system, it is possible to install one after market. This type of after-market option comes in many shapes and sizes, and typically requires drilling a hole in your RV black water tank.