Fresh water filter

[MapisM]

Does anyone attach the fresh water hose to some sort of filter, before refilling the boat tank?
I found a bit of sand/dirt at the bottom of my fresh water tank.
Actually, having never cleaned/flushed it, I guess I can't complain a lot...
Anyhow, I'm now thinking to use some sort of inline filter on the dock hose, and was wondering if somebody can recommend one.
Btw, while docked, I'm not using the boat tank/pump, because I keep the dock hose connected to the boat circuit, hence having always "fresh" fresh water, so to speak.
I'm mentioning this only because the filter should be able to withstand a pressure somewhat higher than the normal pump pressure - occasionally, I've seen up to almost 5 bar on the dock connection, in fact.
Thanks in advance!

 

[sarabande]

we use polypropylene wound filters to remove gross sediment from the spring to the farm. The supply is pumped but sorry, dunno what pressure. Many suppliers all over the place, as it is standard agricultural kit, especially on dairy farms. Some filters go down to 5 microns, but usually installed after a 20, then a 10 micron filter in line.


There are also charcoal filters which remove all nasty tastes, and other types to remove tracs of fuel, or live bacteria.


http://www.pump.co.uk/hose-accessor...polypropylene-filter-cartridge-20micron-p5579

 

[AndieMac]

Does anyone attach the fresh water hose to some sort of filter, before refilling the boat tank?
I found a bit of sand/dirt at the bottom of my fresh water tank.
Actually, having never cleaned/flushed it, I guess I can't complain a lot...
Anyhow, I'm now thinking to use some sort of inline filter on the dock hose, and was wondering if somebody can recommend one.
Btw, while docked, I'm not using the boat tank/pump, because I keep the dock hose connected to the boat circuit, hence having always "fresh" fresh water, so to speak.
I'm mentioning this only because the filter should be able to withstand a pressure somewhat higher than the normal pump pressure - occasionally, I've seen up to almost 5 bar on the dock connection, in fact.
Thanks in advance!

I can't make a suggestion about the filter MM, but how much debris are we talking about? Could you get the nozzle of a wet and dry vacuum into the tank to remove it?

 

[MapisM]

we use polypropylene wound filters....

Thanks, I found the filter container below in the website you linked, and it looks ok for the job.
I just didn't find any reference to the pressure they can withstand... Does anyone have an idea?

 

[MapisM]

I can't make a suggestion about the filter MM, but how much debris are we talking about? Could you get the nozzle of a wet and dry vacuum into the tank to remove it?

Well, the debris didn't seem too bad, but unfortunately the tanks don't have any inspection access...
And I thought that using a filter doesn't hurt anyway!

 

[Momac]

If you want to regulate the mains pressure it can be done.
http://www.ebay.co.uk/itm/WATER-PRE...22MM-FITTING-REGULATING-PRV-ADV-/280917244423

You seem to assume the grit in your tank arrived via the mains supply? Is it not more probable to have entered the deck filler by being washed in off the deck when filling with a hose pipe ? Or maybe the deck filler has an O ring seal needs replacing? Or maybe at some point the deck filler was left off for a while by accident ?

.

 

[MapisM]

Mmm... Yup, a pressure regulator is not a bad idea regardless of the filter, coming to think of it.
Re. your other Qs, I can't be positive about where the debris came from.
But on one hand I'm reasonably careful when refilling, and otoh I never checked the tank bottom before.
Therefore, in almost 20 years of service and a countless number of refilling, using a large variety of dock supplies, I think it's sensible to assume that some grit came from the water itself.....

 

[Momac]

Do you have a filter on your mains supply at home?

 

[MapisM]

Yes I do, before (and inline with) the water softener.
But it's rather bulky (see below), and I was thinking to use something smaller for the boat, hence this thread.
Anyhow, if your Q is meant to understand if around here it's common to get grit from the mains supply, well, while at home I usually open the filter self-flush every 4 to 6 months, and judging from what I can see inside, the grit would hardly fill a tea spoon.
Otoh, as I said, on the boat we're talking of several years, rather than just a few months...

 

[Momac]

I realise you are trying to prevent grit entering the tank but is that essential? For the boat would it not be more practical to have a filter for the cold tap in the galley only ?
I believe you can get an in line filter that will last a full season.

By the way I don't have any water filters at home ...... I thought you would say the same !

 

[MapisM]

I realise you are trying to prevent grit entering the tank but is that essential?

Well, the answer is bound to be no, I reckon. Same as if the question would be "is pleasure boating essential?"
I just thought that it might be worth using one, considering the very low cost and installation effort....

 

[AndieMac]

Well, the answer is bound to be no, I reckon. Same as if the question would be "is pleasure boating essential?"
I just thought that it might be worth using one, considering the very low cost and installation effort....

haha, you are just looking for a project, just accept your boat is perfect!