[Water tank inlets]

Thank you all for your responses. Most helpful!

 

The tank is a solid plastic one and it does appear to be custom made for the boat as it is shaped to fit in the bow under the front deck. 

That is a nice idea for outlets either side to counter any list but I guess if your that low on water you just need to fill up! All there are quite close and in one corner so it's not for that. 

I was thinking of using one of the outlets for a sight gauge actually.

 

I like the logic of having the fittings all through the top. That makes a lot sense. But I'll stick with what I've got and plug off the two I'm not using. 

 

Regarding the breather, is it possible that the filler pipe had a T junction and one branch functioned as the breather? 

 

I guess I'll have to add one and there is a small skin fitting very close to the tank which would work to attach to. 

 

[Water tank inlets]

Hello,

 

I am about to start fitting the plumbing on a boat I am renovating. There is an existing plastic water tank that I am going to use that has 4 inlets. 3 threaded at the bottom which I have attached lever valves to and 1 larger hole at the top which I assume is for filling the tank. Would this be correct?

 

I am wondering why there are 3 take-offs? I had assumed to need only one leading to my pump and feeding the rest of the system. 

Is there a good use for the other two?

 

Also there is no breather. Is this necessary and something I should think about adding?

 

Thanks