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Personally I don’t use the BTF on any RV I’ve ever owned.. the anti siphon valve (OEM) is junk and will crack and leak.. the little sprayer at the end inside the tank is a joke at best…
I prefer to use the Valtera King flush .. I can clean not only the black tank but they gray tanks as well..and yes, the gray tank the kitchen sink drains into always has left over food particles ..using the king flush I get the tanks clean
It’s also nice with that external gate valve and clear section.. I don’t get unwanted messes when I remove the sewer cap due to a holding tank valve that didn’t fully seat..and they will all do this from time to time
I can’t even begin to count the number of 8mages and posts I’ve seen over the years where folks have flooded their RV due to a cracked anti siphon valve..
If you are gonna use it then upgrade the valve to a brass one..
Image’s of typical OEM black tank sprayer..
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