Anti siphon valve for black tank flush
2012 FR Surveyor SV264RK. Can't seem to locate anti-siphon valve for black tank flush. I know what it looks like but it is not under sink in bathroom. When I use BT Flush I get water running from b...
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Cummins12V98 wrote:
Behind Access panel to my shower valve is where mine WERE as in no longer there! Leakin SOB’s are long gone with PVC fittings in their place.
They are installed to prevent holding tank ODOR from venting out the inlet fitting. Most BT flush inlets do NOT have a check valve like the City Water inlet because of the inside Check valve. If the OP's is NOT factory installed, then there is no upper Check Valve. The INLET and the inlet to the tank has a check valve, that comes with the aftermarket BT kit. Doug
