But, it would simplify the installation... really it would...Boasun said:you could have the vent coming up through the deck next to a stanchion or the house. With a loop at the top and screened to keep out the vermin. Then it is in sight as you fill your water tank. This is the way it is done on work boats. Then when we have an overflow we know that the tank is pressed up.
But what ever you do, DO NOT combine the fuel vent with the Water vent... A definite NO NO!
Wow, who would have guessed?TrueBlue said:The water tank vent is necessary to release air within, as it is displaced by water from the deck fill. Conversely, as water is emptied from the tank, air displaces the water.
If a vent is not provided, resulting negative or possitive pressure could rupture either the tank, hoses, or fittings.
The geyser you experience could be from feeding water at a rate that exceeds the vent's ability to handle it.labatt said:We'll have to track ours down. Is it possible that some boats don't have a vent? When we fill our tanks we get big "thunk" sounds as they fill. When you pull the hose out of the deck fitting, you usually get a big geyser shooting out of it. I'm assuming the sounds are just due to the weight of the water pushing on the tank, but I'm not sure about the geyser...
Amusing, but the idea of having all vents leading up and out well above the waterline is a good practice. When diagnosing an exhaust problem, I cable-tied a hose from the siphon break right out of the engine compartment and into the cockpit in order to achieve the recommended "16 inches above the waterline" requirement. The cheerful little ejaculations of H20 during engine operations were proof that I had both good flow and no water siphoning back into the manifold, as had been the case.Boasun said:Thinking about this problem... Maybe if you routed your vent into the cockpit. That way while filling the water tank you can nap in the cockpit and when your feet get wet you know the tank is full. Also when you are sailing with beam ends in the water you won't worry about your tanks being contaminated.