12 volt watermakers, which one?

[a64pilot]

You flush with fresh water your Watermaker after each use, some may not, but should I believe.

[CarinaPDX]

Yes, flush with fresh untreated water after every use, unless not planning on using it for a week - then use biocide to prevent growth.

[Capt.Don]

Following this thread. I'm leaning towards the Spectra, though I keep thinking about the 80e.

Where do folks install the pump, membrane and filters? Do you sacrifice a storage locker or try to scatter under bunks, behind sinks, etc.?
Don

[newhaul]

Originally Posted by Capt.Don

Following this thread. I'm leaning towards the Spectra, though I keep thinking about the 80e.

Where do folks install the pump, membrane and filters? Do you sacrifice a storage locker or try to scatter under bunks, behind sinks, etc.?
Don

mounted my 35E on the bulkhead in the head as a part of my composter conversion used the heads raw water intake thru hull for the watermaker

[mitiempo]

Originally Posted by Capt.Don

Following this thread. I'm leaning towards the Spectra, though I keep thinking about the 80e.

Where do folks install the pump, membrane and filters? Do you sacrifice a storage locker or try to scatter under bunks, behind sinks, etc.?
Don

The 80E is discontinued. When Katadyn bought Spectra a bit over a year ago they trimmed their line to eliminate the ones that didn't fit. Best to look at a Spectra Ventura Deluxe 150. Totally manual and 6 gallons per hour using 9 amps @12 volts.

[a64pilot]

Originally Posted by Capt.Don

Following this thread. I'm leaning towards the Spectra, though I keep thinking about the 80e.



Where do folks install the pump, membrane and filters? Do you sacrifice a storage locker or try to scatter under bunks, behind sinks, etc.?

Don

I do not have a Spectra, I have a Cruise RO.
My control panels are the backside of my engine room, the other side is a wall in my aft cabin, the charcoal filter is underneath my Starboard Settee, where the fresh water pump is, the Hp pump and filters and membranes are in my Lararette with the Generator, the boost pump in in the bilge near the panels.
So scattered throughout the boat, I lost very little storage space that way and it’s silent, cause the noisy bits are with the generator that masks the noise, and I don’t have to open any panels or anything else to use it. Service it yes, but all components are all accessible.
I fiddled and planned for darn near a month figuring where to put everything, done right, it’s not a simple install.

[mitiempo]

Originally Posted by a64pilot

I do not have a Spectra, I have a Cruise RO.
My control panels are the backside of my engine room, the other side is a wall in my aft cabin, the charcoal filter is underneath my Starboard Settee, where the fresh water pump is, the Hp pump and filters and membranes are in my Lararette with the Generator, the boost pump in in the bilge near the panels.
So scattered throughout the boat, I lost very little storage space that way and it’s silent, cause the noisy bits are with the generator that masks the noise, and I don’t have to open any panels or anything else to use it. Service it yes, but all components are all accessible.
I fiddled and planned for darn near a month figuring where to put everything, done right, it’s not a simple install.

The Spectra Ventura has only a quiet boost pump as the Clark pump uses no power and is quiet. Totally modular and quite small.

[newhaul]

Here is a supplier for the diy parts https://www.wateranywhere.com/web-specials/
60 bucks plus shipping for the 2.5x14 housing in stainless

[mitiempo]

Originally Posted by newhaul

Here is a supplier for the diy parts https://www.wateranywhere.com/web-specials/
60 bucks plus shipping for the 2.5x14 housing in stainless

Looks like a good value but that would make for a fairly low output watermaker.

[newhaul]

Originally Posted by mitiempo

Looks like a good value but that would make for a fairly low output watermaker.

that 14 inch one would but they make larger up to 40 inches long.
https://www.wateranywhere.com/2-5-di...brane-housing/
the Dow 2.5 by 14 inch membrane is rated at 150 gpd so not to bad
A lot more than my 35 gpd unit.

[SV THIRD DAY]

If you have to stick with a 12v unit and live with the lower production rates.... then there is only one choice from an Energy Efficiency standpoint and that is Spectra. That's what I would buy if I didn't have a Honda 2000 generator on my boat....

[newhaul]

Originally Posted by SV THIRD DAY

If you have to stick with a 12v unit and live with the lower production rates.... then there is only one choice from an Energy Efficiency standpoint and that is Spectra. That's what I would buy if I didn't have a Honda 2000 generator on my boat....

that's what I would do if I didn't already have to 35E

[Falbala60]

Seawater Pro Watermaker ?

Our Lucia will be delivered end of October in La Rochelle. We did not choose the FP standard option of an Aquabase because at the order time the best technology for us was not evident... Rotary pump or Piston recovery, 12VDC 110VAC etc.

Even if the Recovery Pumps drain less Amps, this is not a major issue for us because we will have 1000W solar, so I started to look at Rotary Pump that are much less expensive. After a comment from CarinaPDX, I looked at https://seawaterpro.com/ ... at 1,450$US ... THIS IS A MAJOR DIFFERENCE with the 14,000$US of a Spectra or 12,000$ of an Aquabase.

Is this too nice to be good ?
The saved money would be used for a better dinghy-motor and 1000W solar.

My main concern with rotary pumps is the noise, so I ask if others owners have installed this system and tried to reduce the noise.

Questions :
1 - Is to insulate the pump, not the motor, with a foam casing and mount the pump with vibration dampers to the bulkhead will reduce the noise ? As there is a water flowing through the pump, is this enough to drain out the heat ?

2 - Some part of the noise will come out through the hoses, so... is encasing the hoses in a standard pipe insulation will be better ?

[SV THIRD DAY]

The Seawater Pro is a disposable Hp pump water maker that isn't rated for sea water. So yes it is less money but do you want to be replacing the heart of the system (Hp pump) or purchase a unit with components rated for the marine environment?

20GPH piston pump 120v AC units start at $4000, but will last.

There is a place for disposable pump systems...the question becomes is your boat while out cruising away from easy shipping of replacement parts one of them?

[Falbala60]

I forgot to mention that I DO NOT RELY on Karcher pump, I plan to install the Stainless Pump ... that one or a similar.

Are you less severe in that case ?
With the price difference (2000$ to 6000$) I can have many priming and high pressure pump as spares.

What are the next weak links ?