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Old 10-19-2020, 09:07 PM   #1
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Black tank flush

Hi all. I have a Superlite 29rkws. Went to use the black tank flush for first time and water won't go in, At home tried to pump antifreeze in but only got sprayed with it coming out by connection. Am I doing something wrong? What gives?
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Old 10-20-2020, 08:56 AM   #2
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You have likely experienced a bad anti-siphon/check valve. It's a fairly common problem.

Here are a couple of threads to check out.
https://www.forestriverforums.com/fo...sh-218617.html

https://www.forestriverforums.com/fo...sh-218964.html

https://www.forestriverforums.com/fo...4&pp=25&page=2

https://www.forestriverforums.com/fo...ng-214956.html

https://www.forestriverforums.com/fo...on-210582.html




https://www.forestriverforums.com/fo...ush-86736.html
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Old 10-20-2020, 10:01 AM   #3
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As mentioned, an often discussed topic.

Some have reported they are plumbed backwards from the factory.
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Old 10-20-2020, 03:06 PM   #4
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After reading several posts I did what dealer suggested and replaced valve with a 90 elbow. Thanks all!
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