First-In, Last-Out, Rule of Dumping

Using this method will ensure your tanks are emptied in an environmentally friendly manner as well as much more sanitary for the operator. Please tell all your RV'ing friends about this procedure. Or, better yet, give them a copy of this procedure. Together we can get rid of all the mess at RV park sites across the country.


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Using your system

  1. Remove the system from its storage container when you are near the park sewer inlet.
  2. Insert the nozzle into the sewer inlet securely
  3. Open the gray lever on the side of the nozzle. (If you have a sewer inlet fitting without an on/ off valve, use a cap to cover the outlet fitting)
  4. While holding the other end of the hose assembly, walk back to the RV where the sewer outlet is located.
  5. Remove the cap on the coach, then the storage cap in the male Cam Loc fitting (or bayonet fitting).
  6. Connect the Male Cam Loc fitting into the Female Cam Loc fitting on the coach and rotate the gray cams to their locked position. (You already know how to attach the bayonet fitting).

 

Dumping the Tanks

  1. Check your installation to be sure the nozzle is open and secure in the park sewer inlet.
  2. Open the black dump valve and allow the tank to fully drain (see Flushing the Holding Tanks section, next).
  3. Close the black valve.
  4. Open the gray valve. If your RV is equipped with 2 gray valves, open the Galley valve first. When the tank is fully drained, close the Galley valve.
  5. Now open the shower valve and let fully drain. When drained, close valve.

 

 

Flushing the Holding Tanks

  1. Most RV's have a flusher in the black tank and some RV's have them for the gray tanks. You should have a flusher in both or all 3 tanks if so equipped.
  2. Connect a hose to the coach connection on the side of the RV. Do not use the fresh water hose used for supplying water to the RV.
  3. Turn on the water and fill the Black tank about 2/3rds full before opening the dump valve. Repeat this process until the sight glass in your hose runs clear.
  4. Repeat step 2 and 3 with your Grey tank(s).

 

Restoring the system for travel

  1. Make sure all tank dump valves are closed.
  2. Remove Male Cam Loc fitting connected to the coach and install the protective cap, both in the coach fitting and the male hose fitting. (Or your bayonet fitting)
  3. Walk the hose assembly back to the sewer inlet letting the hose collapse as you get close to the park sewer inlet.
  4. Close the gray lever on the nozzle. (Or lift the sewer fitting out of the sewer and put the cap on the outlet)
  5. Insert the nozzle in the storage container and feed the hose and Male Cam Loc fitting back as well.
  6. Return system to its RV storage location.

 

If you have any questions or need clarification regarding this procedure please let us know by email

Call us if you want to ask questions about any of our products, if you have installation questions, or maybe you're just stuck and need a helping hand. We'll get you out of any RV waste management jam.

 

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See Drain Master in Action

The well-known and highly respected RV Doctor will show you how easy it is to empty your holding tanks without all the fuss and "muss".

How to empty holding tanks.

Click on video to see the simplest and safest way to empty holding tanks.