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Old 04-22-2022, 05:54 PM   #1
Rdgt
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Springdale black tank

I have a new to me 2020 Springdale 300FWBH. Didn’t get a briefing on this thing so help we with how to flush the blank tanks
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Old 04-22-2022, 06:39 PM   #2
chuckster57
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Welcome to the forum

If your trailer has a flush connection, it’s for the black tank (toilet). Your sinks and shower drain into the gray tank.

DO NOT use your drinking water hose. Hook up the hose to the faucet and the flush connection at the trailer, turn on the water and open the drain valve for the black tank. Run the water for about 5 minutes to clear the solids from the tank. You can close the valve for a couple minutes to put more water into the tank, just DO NOT forget to open the valve after 2 minutes. I use a clear piece of drain pipe so I can see if the water is clean. Once clean, turn off water and then close valve.

That’s the way I do it, others may have variations.
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Old 04-22-2022, 06:51 PM   #3
Rdgt
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There is a connection next to the fresh water fill. Does that flush bothe blank tanks?
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Old 04-22-2022, 07:02 PM   #4
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Do you have 2 toilets?
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Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.

Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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Old 04-22-2022, 07:03 PM   #5
Rdgt
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Yes. It’s a bunkhouse with a 1/2 bath
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Old 04-22-2022, 07:07 PM   #6
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I looked it up as you were responding. I assume you have 2 separate drain valves, and if that’s the case you can test by running the rinser. Watch the monitor panel and see if it indicates a higher level on both or just one. If just one then it’s possible there is a second flush connection somewhere else on the exterior. Once you get a higher level indicated, turn the rinser off and drain the tank.
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2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.

Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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Old 04-22-2022, 07:16 PM   #7
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I will give that a shot. I couldn’t really find any data
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Old 04-29-2022, 08:46 AM   #8
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On the same topic,,, I have a black water flush that has worked fine for 4 years but now when I go to flush it the water comes out a black plastic fitting up high under the bath sink that looks like an anti syphon fitting. Do they go bad?
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Old 04-29-2022, 09:10 AM   #9
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Quote:
Originally Posted by Formathe View Post
On the same topic,,, I have a black water flush that has worked fine for 4 years but now when I go to flush it the water comes out a black plastic fitting up high under the bath sink that looks like an anti syphon fitting. Do they go bad?
Yes they do. You can replace with the same thing ( think failure) replace with a brass one ( think better) or you can take it out, re plumb the ends together and use an anti siphon valve at the hose hook up.
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Old 04-29-2022, 09:53 AM   #10
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Yup, just ordered a Watts LF288A. No reason to spend 48 dollars at my local RV shop for another [plastic one when I can get a solid brass one from watts for 70 bucks taxes and shipping in.
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Old 05-03-2022, 01:57 PM   #11
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Originally Posted by Formathe View Post
Yup, just ordered a Watts LF288A. No reason to spend 48 dollars at my local RV shop for another [plastic one when I can get a solid brass one from watts for 70 bucks taxes and shipping in.
Finished installing the new tank flush anti siphon valve and it works great. the ball valve in the old one froze up cause of lime build up.
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