Re: Marina mains water and fresh water pump

Judy and Bill aboard SV BeBe <yahoogroups@...>


Water flow at 40psi through 3/4" hose/pipe is about 300 liters/minute. How long would it take a burst hose or broken hose clamp in the watertight engine room to cause the filling the engine room, assuming that the automatic bilge pump will pump out at 75 liters/minute? I think my flow calculations are fairly accurate.

I have thought about this because I know some people connect directly to their water system, but decided that I would put a few more hours on my pump rather than risk filling the engine room.

I am not trying to be critical of your method, but since you put this out there, I wanted to say something about the downside. Some people might follow your method without thinking about the downside.

BeBe, SM2k, #387
Currently anchored near Fethiye, Turkey

--- In amelyachtowners@..., "Anne and John Hollamby " <annejohnholl@...> wrote:

Our freshwater pump is a 40 psi Jabsco which is fine. The plumbing is all on one circuit so the pressure tank behind the generator gets pressurised by the Jabsco. Mains water is normally much cheaper than watermaker water so we switch off the Jabsco and connect the hose in the cockpit locker to the mains hose which then supplies the boat without spoiling the water in our tank. If we want drinking water we turn off the stopcock in the cockpit locker, turn on the Jabsco and run off some water in the galley first. Not sure that this would be safe in the rare marina with very high pressure mains and at any event we turn off the mains before leaving the boat.

Anne and John, Bali Hai, SM 319, Marsala, Sicily

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