TedS mpking ncitro
Back to the "vented loop" idea suggested by both Ted & Mike . . .
In our earlier discussions of this problem, we made the assumption that the tank was ballooning from pressure fill and emptying this extra water was what extended the drain time. With this new information from Neil, we should reconsider the vented loop as used in marine plumbing. If this is siphon vacuum collapsing the tank, the vacuum break in a vented loop should stop this. This won't stop the surge pumping from expelling water while travelling, but would stop a siphon action started by surge pumping filling the vent line. These vented loops are available in different diameters from marine suppliers. When using water from the tank, the replacement air might come in through this vacuum break, so it would need to be located in a "clean" area . . . probably close to the tank and inside the frame rail & coroplast.
Rob
Back to the "vented loop" idea suggested by both Ted & Mike . . .
In our earlier discussions of this problem, we made the assumption that the tank was ballooning from pressure fill and emptying this extra water was what extended the drain time. With this new information from Neil, we should reconsider the vented loop as used in marine plumbing. If this is siphon vacuum collapsing the tank, the vacuum break in a vented loop should stop this. This won't stop the surge pumping from expelling water while travelling, but would stop a siphon action started by surge pumping filling the vent line. These vented loops are available in different diameters from marine suppliers. When using water from the tank, the replacement air might come in through this vacuum break, so it would need to be located in a "clean" area . . . probably close to the tank and inside the frame rail & coroplast.
Rob
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