On our new H-260 we had a factory installed Y-Valve added to the marine head with holding tank since we frequently sail in the Sea of Cortez. But it is impossible to tell which way to turn the valve for which function. The hoses from the 2 discharge sides of the valve go out of sight behind a partition and we can't tell which is which. One comes back and goes to the seacock, but which one? Is the only way to figure it out to do a test with "clean head"? The schematic from Hunter does not cover this.
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Y-Valve handle should line up with flow direction
Or there should be an arrow...or SOME clue on the y-valve. If not, Rick's suggestion isn't a bad one...put a little detergent in the bowl and watch to see which way the handle's aimed when you see bubbles as you flush. Don't use much! Otherwise, tacking and otherwise finding out why the sea is often called the "bounding main" can leave you with a holding tank full of suds if you send it there first.
Or there should be an arrow...or SOME clue on the y-valve. If not, Rick's suggestion isn't a bad one...put a little detergent in the bowl and watch to see which way the handle's aimed when you see bubbles as you flush. Don't use much! Otherwise, tacking and otherwise finding out why the sea is often called the "bounding main" can leave you with a holding tank full of suds if you send it there first.
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