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Open Roads Forum  >  Tech Issues

 > Tip on accessory for tank flushing

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tkcas01

Roaming Fulltimer

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Posted: 07/22/13 08:47am Link  |  Quote  |  Print  |  Notify Moderator

I was recently parked at a location where I needed to use a portable macerator for dumping holding tanks. Using that, after dumping the black tank you can turn the macerator off, open the grey dump valve and let that water back-flush into the black.

I found that cleaned out the black tank very thoroughly to the extent that the tank sensors started working after years of always showing full! I know those things are the curse of almost every RV owner. The macerator also has a connection for a water hose so you can backflush both tanks with fresh water.

Realizing the value of the backflush technique, I looked for a solution to do the same thing when using the slinky. Found this at Camping World and very happy with it. A good accessory for keeping tanks clean.

http://www.campingworld.com/shopping/item/flush-king/20522


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LakeN

North Carolina

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Posted: 07/22/13 09:08am Link  |  Quote  |  Print  |  Notify Moderator

Have been using one for years....it is invaluable!!

lanerd

Ridgecrest, CA

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Posted: 07/22/13 10:09am Link  |  Quote  |  Print  |  Notify Moderator

Using the gray tank water to back flush the black tank is a common practice. You don't even have to turn off the macerator to do it.

Flush King has also been around for years and years and is a popular device. You can get a much cheaper knock-off at Walmart (just doesn't have the gate valve). I use both the macerator and the Walmart knock-off on my coach....but black tank sensors are still not reliable.

Thanks for the info.

Ron


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mlts22

Austin, Texas

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Posted: 07/22/13 11:33am Link  |  Quote  |  Print  |  Notify Moderator

I use the cheap method. A Valterra twist-on gate valve so I can open/close the black/grey tanks without anything coming out. I then drain the black tank, and backflush it with the grey tank, just as I do with the macerator pump, except I just open/shut the additional valve instead of running the pump.

Old-Biscuit

Verde Valley

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Posted: 07/22/13 05:32pm Link  |  Quote  |  Print  |  Notify Moderator

I also went the cheap way but permanently.......

Installed a drain valve on horizontal run of drain line just before end cap.
No surprises when removing end cap
Don't have to store it like a twist on style (don't want twist on left hanging from end of pipe when traveling)

One of the first mods I do to all my trailers.


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Gjac

Milford, CT

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Posted: 07/23/13 08:29am Link  |  Quote  |  Print  |  Notify Moderator

I guess I use a cheap method too. I first dump the black tank, lift hose above the gray,open gray valve, let gray fill the black, raise and lower the hose to provide added flushing, then quickly insert hose into the dump hole.

Ron3rd

Upland, CA USA

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Posted: 07/23/13 05:59pm Link  |  Quote  |  Print  |  Notify Moderator

tkcas01 wrote:

I was recently parked at a location where I needed to use a portable macerator for dumping holding tanks. Using that, after dumping the black tank you can turn the macerator off, open the grey dump valve and let that water back-flush into the black.

I found that cleaned out the black tank very thoroughly to the extent that the tank sensors started working after years of always showing full! I know those things are the curse of almost every RV owner. The macerator also has a connection for a water hose so you can backflush both tanks with fresh water.

Realizing the value of the backflush technique, I looked for a solution to do the same thing when using the slinky. Found this at Camping World and very happy with it. A good accessory for keeping tanks clean.

http://www.campingworld.com/shopping/item/flush-king/20522


The Flush King is one of the best accessories I ever bought.


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