Black water flush not working 8.5 24FBA Toy Hauler

Started by Swamplandkarl, July 30, 2019, 02:13:18 AM

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Hi, my black water flush line is stopped up, I can disconnect it from the tank and blow air back through it but water will not flow through it, does anyone know where the check valve is on my 8.5.24FBA (does it have one) as I have looked everywhere,
Any suggestion or a fix for this issue.
Would anyone have a plumbing diagram?
Thank you,