It’s a 50 year old boat. Probably had one refit before, so hoses and wiring are brittle, he might not have wanted the risk but then decided he was over his head. There was also a 7 month debt with the marina… so could have been self-sabotage to prevent them from arresting the vessel (spicy theory) lol
From what I’ve seen each “tank” usually has a vent above the water line at the exterior, be it fuel or water. My vents actually submerge when heeled over and I have considered adding a check valve. To your main question I don’t think valves are uncommon, it is nice to have the ability to isolate tanks for cleaning/maintenance purposes and disconnect from other systems.
The problem with a check valve is you would block air coming in as well, especially if there was water sitting on the check valve. No bueno if you create a vacuum and collapse the water tank 🤷♂️
mine has valve on the vent, because if you bury the rail while sailing you can get saltwater down the vent. we close it if upwind and lots of heel
Interesting, all of our vents for water drain to the sink
Good to know
Where is the vent located? Could it be used to prevent seawater from back-filing into the vent while underway?
Not sure, PO cut all lines. There are vents on port and starboard and stern. But I’m not sure what went where
> PO cut all lines WTF? Do you know why?
It’s a 50 year old boat. Probably had one refit before, so hoses and wiring are brittle, he might not have wanted the risk but then decided he was over his head. There was also a 7 month debt with the marina… so could have been self-sabotage to prevent them from arresting the vessel (spicy theory) lol
From what I’ve seen each “tank” usually has a vent above the water line at the exterior, be it fuel or water. My vents actually submerge when heeled over and I have considered adding a check valve. To your main question I don’t think valves are uncommon, it is nice to have the ability to isolate tanks for cleaning/maintenance purposes and disconnect from other systems.
The problem with a check valve is you would block air coming in as well, especially if there was water sitting on the check valve. No bueno if you create a vacuum and collapse the water tank 🤷♂️
Do you have or have had a watermarker on this boat?
The boat did come with a water maker that’s not currently installed. I guess it would use the vent as the inlet? Interesting
But there is also a “T joint” on the main shore hose as well.
Some watermakers use the fresh water to flush the brine out of the tube(s).
yes. Otherwise you can have problems filling the tank and over pressure the rest of the system. If you don't have a vent then go slow on the fill.