We had a fouled discharge line
and while dealing with it, what I saw made no sense too me.
First the sani line
from the head is Trident radiator hose
, but it is rated to 250 deg F, so that's a good thing
But anywho, from the head the line
sweep up to the vent loop, then down about 8" to a Y, one goes OB, the other to holding, about 3' pass the Y ( under the lav ) in the line
to holding tank
is a gate valve, which was the source of the blockage.
This has never made sense to me, and I'm not sure what the PO was thinking. It would makes more sense to have a deverter Y 8" below the vent loop than it does to have a open Y; because when waste is directed to the holding, it seems to me the OB line
is full of waste and the same goes for when the waste is deverted OB there's waste in the holding line
up to the gate valve.
So, does this make sense to anyone, if so explain why, I have to change the line
out anyhow and if I can find a deverter type Y valve I'll make the change there also
Oh, also,I can't find a Y type deverter type valve, any clues where to look ???