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Old 09-24-2021, 03:54 PM   #1
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Black tank flush

I have a Della Terra 230RB. There is a black tank flush connection on the side of the trailer. There is a warning label attached that says do not use unless the fullway termination valve is in the open position. The owners manual does not mention this valve. Where is it located? TIA
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Old 09-24-2021, 04:15 PM   #2
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Quote:
Originally Posted by welfarecop View Post
I have a Della Terra 230RB. There is a black tank flush connection on the side of the trailer. There is a warning label attached that says do not use unless the fullway termination valve is in the open position. The owners manual does not mention this valve. Where is it located? TIA
Whoever wrote that line is out to confuse people. The fullway termination valve is the dump valve for the black tank.

FWIW, many people will run water in thru the flush with the valve closed. But be careful, don't walk away or get distracted. Otherwise, if the tank fills, it may overflow from the vent on your roof - definitely makes for a bad day.
The flush line can be used to put some water in the tank after dumping, or you may partly refill and do a second dump to clean more stuff out.
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