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Old 09-19-2016, 11:03 AM   #1
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How Long Takes To Empty Black Tank?

Hello. This is our 2nd time taking our new Grey Wolf camper out and the 1st time we did not use the bathroom for *ahem* solid waste. This trip we did the last day. I'm pretty (probably overly) thorough when it comes to emptying the tank until everything is crystal clear, then rinsing the black hose, etc. We have the clear "L" shaped valve that helps.

My question is: How long does it take you to clean/empty your black tank (we are weekend campers). My husband was mad b/c he said this is crazy & takes way to long. I estimate we probably spent 25-30 minutes doing so this past Sunday. I do use sanitation tablets at the start of each trip to help sanitize and break down the TP.

Am I being overly aggressive? How long does it take you all to empty the black tank?
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Old 09-19-2016, 11:10 AM   #2
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Definition

When you say Empty, what do you mean? From the time you pull the lever to the time things almost stop running? Or the entire process of dumping, rinsing, and cleaning up?
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Old 09-19-2016, 11:14 AM   #3
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10-15 minutes. Start to finish.
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Old 09-19-2016, 11:22 AM   #4
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Listen to your husband. You do not mention where you were at, but you do not want to be taking 25 to 30 minutes to dump if there is a line behind you at the dump station. Its not the place to do your tank maintenance. It shouldn't take you more than 10 minutes to dump out and do a quick flush with the tank flush or a bucket if others are waiting such as on a Sunday afternoon after a busy weekend.
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Old 09-19-2016, 11:29 AM   #5
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Originally Posted by Mr Havercamp View Post
Listen to your husband. You do not mention where you were at, but you do not want to be taking 25 to 30 minutes to dump if there is a line behind you at the dump station. Its not the place to do your tank maintenance. It shouldn't take you more than 10 minutes to dump out and do a quick flush with the tank flush or a bucket if others are waiting such as on a Sunday afternoon after a busy weekend.
Agreed.

We are lucky enough to be able to dump at home where we can take our time. If we have to dump at a park on the way out, It's usually 5-10 minutes. On average...
  • Put on gloves, unstow and connect drain hose: ~1 min
  • Open the black tank valve and let it drain: ~30 sec - 1 min
  • Open the galley tank valve and let it drain: ~ 1-2 min
  • Open the bathroom grey tank valve and let it drain: ~ 1-2 min
  • Close all the valves and disconnect the hose: ~30 sec
  • Rinse and stow the hose: ~1 min
  • Dispose of gloves: ~30 sec
Imagine how long the lineup would be if everyone took half an hour...
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Old 09-19-2016, 11:29 AM   #6
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It takes maybe 5 min for black, 5-10 man for grey. If no one is behind us, we will do a black tank flush between. But I would be very upset to have to wait 25-30 minutes for someone to empty their tanks.
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Old 09-19-2016, 11:31 AM   #7
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Like usual... It depends. When we were weekenders, if we were going out again fairly soon, the dumping/cleaning process would take about 15 minutes to rinse and backflush. Then put a few gallons and chemicals back in. If we were going to store for awhile it might take me over an hour to alternate letting the sani flush run and then backflushing until output ran completely clear.
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Old 09-19-2016, 11:41 AM   #8
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For me, hook up clear elbow and sewer hose...pull black valve...while dumping, connect black water hose to black flush port...turn on water when black finishes...turn off water when runs clear...close black / open gray...while gray is dumping, unscrew from black flush port and attach hose washer attachment...after gray dumps, close valve / disconnect hose from trailer / attach hose washer...rinse hose for a few seconds...disconnect and stow.

Probably 10-15 min tops.
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Old 09-19-2016, 11:47 AM   #9
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If no one is in line it takes me about 20 minutes to drain and flush both tanks. I start with the black tank. When it is done I start the grey water and fill the black tank. While the black tanks empties the second time I fill the grey tank then empty it. I then rinse the fittings and hoses and store them.

If there is somebody behind me I flush the black tank running some water while it drains and do the same for the grey tank. I rinse the fittings and hoses then pull forward to put everything away. This usually takes about 10 minutes maybe a touch more.

I have to say I am rarely in a line at the state parks we go to. Check out is 3PM and folks are usually gone by the time we leave between 2PM and 3PM.
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Old 09-19-2016, 12:07 PM   #10
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I just assumed the the OP was doing it at home or at their full hookup site in a CG. Those are the only places you can take your time. Looks like most assumed otherwise If we have to use a public dump station (usually a truck stop for us), we just dump and go unless there is nobody in line and then we might run the saniflush for a few minutes. Either way we are only there 5 to 10 minutes.
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