Any idea what this is?

[markc]

Located at the back of the engine room, can't work out what it is, any ideas?

Cheers

 

[maby]

Strange, that is what it is! Those gauges register up to 200psi - which is a lot of pressure for anything around a marine diesel installation - other than the fuel injection itself......

 

[Poignard]

Well I'd say, working from right to left, you have a filter in a detachable bowl, with a drain cock. Presure gauges either side showing inlet and outlet pressure, followed by a pressure reducing valve.

 

[Bouba]

Without knowing what’s in the pipes or where they are going I will guess that it’s a hydraulic oil filter system

 

[Poignard]

Without knowing what’s in the pipes or where they are going I will guess that it’s a hydraulic oil filter system

It's for the water system. Those gauges on the right must not have oil in them (that's why there's a little picture of an oil can with a cross over it)

 

[Portofino]

We don,t know what does not work / or what’s switched on when the pic was taken .

It’s poss the closed circuit with a chiller air con system, which obviously is not on .

Or Remnants of a compressor- dive bottle refil system- which mostly has been removed , looks like a manifold.

Or a pressure regulator for incoming pontoon water hook up

 

[Bouba]

It's for the water system. Those gauges on the right must not have oil in them (that's why there's a little picture of an oil can with a cross over it)

I’m sure you’re right (good eyesight by the way:encouragement but if it’s a home made jobbie I doubt that cheap generic gauges care what’s in them.

 

[kashurst]

My guess is that it is something to do with the water system.
Do you have an external water connection fitting somewhere on the transom/bathing platform, so that you can connect a hose pipe to the boats' drinking water system, via the shore side/pontoon water tap/valve?
Some big boats do so you don't have to keep filling up the water tank if you plan on staying a long time.
I am wondering if the very high pressure gauges are a red herring as the metal filter assembly is connected to a plastic pipe - pressure can't be that high, can it?
The other gauge with the red finger on it reads the sort of pressures you might get from land based water supplies.

 

[Poignard]

My guess is that it is something to do with the water system.
Do you have an external water connection fitting somewhere on the transom/bathing platform, so that you can connect a hose pipe to the boats' drinking water system, via the shore side/pontoon water tap/valve?
Some big boats do so you don't have to keep filling up the water tank if you plan on staying a long time.
I am wondering if the very high pressure gauges are a red herring as the metal filter assembly is connected to a plastic pipe - pressure can't be that high, can it?
The other gauge with the red finger on it reads the sort of pressures you might get from land based water supplies.

The two gauges to the right have two scales, an inner and an outer. The innner shows pressures from 0-16 bar and the outer from 0-230 psi*.

The leftmost gauge with the red pointer shows the pressure downstream of the pressure reducing valve. The PRV is adjustable to give the desired output pressure. The red pointer shows what it should be, the black pointer shows what it is.

 

[markc]

Brilliant, thanks for the input. You have given me the answer, it's for a dockside water connection. I would have had no idea that a connection for water would need quite a big set up. I'm not sure if I will use it - maybe if we're on board for an extended time as I don't fancy growing nasties inside the pipe that will run to shore. However, it's probably worth getting it up an running as a fallback option if the water pump on board fails.

Thanks again for your knowledge!

 

[Poignard]

Brilliant, thanks for the input. You have given me the answer, it's for a dockside water connection. I would have had no idea that a connection for water would need quite a big set up. I'm not sure if I will use it - maybe if we're on board for an extended time as I don't fancy growing nasties inside the pipe that will run to shore. However, it's probably worth getting it up an running as a fallback option if the water pump on board fails.

Thanks again for your knowledge!

It's rather more sophisticated than the water system on my boat. My cold supply system comprises a hand pump drawing water of dubious quality from a tank I have never dared look inside for 20 years. My hot water system comprises a kettle, a plastic bowl and a sponge!

 

[Lloydroberts]

There should be a barrel on one end.....labelled Mahou.

 

[jrudge]

Brilliant, thanks for the input. You have given me the answer, it's for a dockside water connection. I would have had no idea that a connection for water would need quite a big set up. I'm not sure if I will use it - maybe if we're on board for an extended time as I don't fancy growing nasties inside the pipe that will run to shore. However, it's probably worth getting it up an running as a fallback option if the water pump on board fails.

Thanks again for your knowledge!

The only odd thing is the range of the gauges! Mains water will not be that high a pressure. I am also surprised someone added another filter. A carbon filter I could see, but this does not look like a carbon filter.

You need to make sure it is adjusted so that the pressure is below the hot water relief valve. If not the system goes over pressure and all you hot water goes overboard!

 

[MapisM]

The two gauges to the right have two scales, an inner and an outer. The innner shows pressures from 0-16 bar and the outer from 15-230 bar.

LOL, you managed to make as many mistakes as you possibly could: inner and outer scales are actually the other way round, and the former is in obviously in psi rather than bar...

Just a few minor comments for markc:
I'm almost sure that Ferretti did NOT fit the dock connection - not even as an option.
And it shows, because even if whoever made the installation used an impressive set of components (I've never seen a filter with in & out gauges on a fresh water dock connection before!), they managed to fit them in the wrong sequence...
I mean, according to the arrow on the filter head, the water flows from the right to the left in the pic (if not, the filter installation would be wrong).
Therefore, it would have been better to fit the non-return valve first (i.e. before the filter, while it's actually at the left border of the pic, right after the Pressure Reducing Valve).
The PRV should have followed, and eventually the filter.
Btw, this sequence would have allowed you to backflush the filter, simply detaching the dock connection and pressurizing the onboard pump, while the current position of the non-return valve does not allow that.
Last but not least, if the PRV is set at 5 bar as the red finger suggests, I would reduce it to 3 max.

Ref. your concern about the nasties in the hose, fwiw myself and swmbo are still alive after having used ONLY direct supply when docked, for almost 30 years now.
The only caution is that we never drank it (but neither we drink water from the tank, anyway), and when the boat stays unused for some time, we let the water run for a while before using it. Not a big price to pay for the convenience of never bothering with refill and not use the pump, imho.
That said, we already had this discussion in the past, and someone envisaged the risk of salmonella and God knows what else, so I must include a "YMMV" disclaimer...

 

[Poignard]

LOL, you managed to make as many mistakes as you possibly could: inner and outer scales are actually the other way round, and the former is in obviously in psi rather than bar...

You're right.

 

[jrudge]

As far as I know the manufacturers rarely offer this ( I had a Cranchi with it) for fear that if the boat is left unattended and there is a leak the water keeps on coming ....

We used to have one and I did turn the water off when leaving the boat ( even for dinner).

I also installed a valve that would allow me to fill the tank from the shore connection.

 

[markc]

LOL, you managed to make as many mistakes as you possibly could: inner and outer scales are actually the other way round, and the former is in obviously in psi rather than bar...

Just a few minor comments for markc:
I'm almost sure that Ferretti did NOT fit the dock connection - not even as an option.
And it shows, because even if whoever made the installation used an impressive set of components (I've never seen a filter with in & out gauges on a fresh water dock connection before!), they managed to fit them in the wrong sequence...
I mean, according to the arrow on the filter head, the water flows from the right to the left in the pic (if not, the filter installation would be wrong).
Therefore, it would have been better to fit the non-return valve first (i.e. before the filter, while it's actually at the left border of the pic, right after the Pressure Reducing Valve).
The PRV should have followed, and eventually the filter.
Btw, this sequence would have allowed you to backflush the filter, simply detaching the dock connection and pressurizing the onboard pump, while the current position of the non-return valve does not allow that.
Last but not least, if the PRV is set at 5 bar as the red finger suggests, I would reduce it to 3 max.

Ref. your concern about the nasties in the hose, fwiw myself and swmbo are still alive after having used ONLY direct supply when docked, for almost 30 years now.
The only caution is that we never drank it (but neither we drink water from the tank, anyway), and when the boat stays unused for some time, we let the water run for a while before using it. Not a big price to pay for the convenience of never bothering with refill and not use the pump, imho.
That said, we already had this discussion in the past, and someone envisaged the risk of salmonella and God knows what else, so I must include a "YMMV" disclaimer...

Thanks P for your comments. I have looked further and you are right, the water flows from right to left, through the filter and to the non-return valve. I'll take a look at the filter tomorrow. There is a valve under the filter, could this be for flushing the filter?

Cheers

 

[MapisM]

There is a valve under the filter, could this be for flushing the filter?

Yes it is, but if you open it in your setup, all you get is the unfiltered water coming from the dock, if connected.
To clean the filter, you must backflush it (well, aside from opening and washing it, of course), i.e. close the dock connection and reverse the flow by turning the onboard pump on, eventually opening the valve under the filter.
But now you can't, because the non-return valve is downstream to the filter, so the pressure from the fresh water pump can only "push" water backwards up to that valve, reaching neither the PRV nor the filter.

 

[MapisM]

As far as I know the manufacturers rarely offer this ( I had a Cranchi with it) for fear that if the boat is left unattended and there is a leak the water keeps on coming

Correct. Potential liabilities and all that - builders who trust their lawyers typically don't offer that...
Interestingly, I also had it on a Cranchi first, and after that I made the modification to my previous boat, who didn't have it.
Luckily, as well as Cranchi, DP is another of not many exceptions.
They were OTT with regard to safety in many respects (w/tight bulkheads, multi-redundant pumps, double bottom...), but dockside fresh water connection was standard in all their boats.

 

[jrudge]

I had a flood last year when someone left on a WC bidet valve. any hundreds of litres of water :-(

For houses you can get shut off valves that after an uninterrupted XXXX litres of water the water flow is shut off.

https://www.bes.co.uk/water-block-s...SkVHqnBLPoShoCWWUQAvD_BwE#product-details-tab


After the flood i did wonder and they could be a good thing to put in a shore water connection. If set at say 100 litres that is a pretty long shower!

EDIT .... I found another link and the limit on this device ( I cant find and others that a as simple) is 50 litres

https://www.waterfilterman.co.uk/wa...cX7elQLp4dqiVuh02028ZQEY58Ch1hqBoCuxAQAvD_BwE

You would need to add a bypass to allow tank draining etc.

My boats plumbing ( and I suspect most) is not really so segregated as to allow only some devices to be protected and 50 lts is prob too low for things like a shower ... and it needs to be reset with a key so you really dont want it triggering!

ANOTHER EDIT - You can put them in parallel and double the limit so 2 would give 100 lts before cutting off