Alfa Laval Pure Bilge Seperator Pros/Cons

I am working on a presentation for the Alfa Laval Pure Bilge Seperator and was wondering if i could get some input on the Pure Bilge ows, some pros and cons, and what (if any) ows would be a better option. Cheers.

I’ve worked on an Alfa Laval EcoStream, which looks to be a really similar piece of equipment.

Cleaning a disk stack is a lot easier than cleaning/replacing a coalescer, or replacing a sand/carbon setup. Don’t have to dispose of drums of OWS waste…

It’s an Alfa Laval manual so it contains nearly everything from rebuild to troubleshooting.

I liked working on that Ecostream a lot more than I like pulling covers and changing paper filters, Brillo pad rolls, sand and charcoal.


They’re pretty good, most engineer’s already have a working knowledge of purifiers, so nothing new to learn.

I was on a ship, however, that installed it after the fact. The tank it was sucking from was below the unit, so you had to prime the whole suction line with a garden hose, then start the unit, and slowly wean the suction side from the garden hose potable water supply. This tank was also wide and shallow, so when the level was low and we took a roll the whole thing would get air bound and trip. I blame the Port Engineer and tech rep for placement though, not the manufacturer.

gawd, the memories!!! …wt sherman is right tho… cleaning discs is about as ez as that job gets… wait till you have water contaminated fuel and you have to clean that pig every 15 minits or less for a couple days!!!

Completely beside the point, but deLaval got started making cream separators for farm dairies. And the expression “going like sixty” is alleged to have originated because you have to crank the handle at 60 rpm to get the output streams to go in the right places. I’ve cranked one, it takes a while to get up there.

When I was a child, more than a couple of summers ago, dairy farms were either on “town supply” or cream to cheese factories. On the farm we were supplying cream and pride of place was given to the new cream separator from Alfa Laval. The handamatic one was still there for the constant power cuts that we experienced 70 years ago.
The cream churns were hauled to the front gate on a sled pulled by a draft horse and the whey was fed to the pigs.

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My dad bought a farm in Maine in '62, half a square (~130 ha), sixty acres cleared with house and barn. Looking back many years later, I presume it was so that if we were by some chance not in DC when it got slagged, we would have a place to go home to.

Came with a black-japanned hand crank deLaval separator.

I have a model 5015 onboard and prefer a Boss by recovered energy. Parts are outrageous. $280 for a inlet strainer o-ring, $3000 for the strainer housing, $5000 for pairing disk, Solenoids are around $480 each. $1600 for a intermediate service kit. Cleaning is easy they are similar to other Alpha Laval separators.