Black water tank rinse valve not working
We have a Wildcat 5th wheel that has two black water tanks as well as two grey water tanks.
There is a Black Water rinse valve located in the outside compartment for hooking a hose up and rinse the black water tank or tanks.
Problem is if I hook a hose up to the inlet and turn the water on the hose builds up pressure but no water flows past the inlet into the tank or tanks.
If you noticed I keep saying tank or tanks. Since I have two black water tanks would the rinse if working spray both black water tanks at the same time or is there a diverter valve somewhere that would need to be switched?
Fifth Wheel is a 2013 Wildcat 353LS for reference purposes.
Thanks for any assistance,
2013 Ford F350 FX4 4x4 PSD
2013 Wildcat 353LS
2015 Day/Nights Camped 5
2014 Day/Nights Camped 29