J/46 VacuFlush parts and holder tank for free

[David Jade]

In case anyone is in need of VacuFlush parts and the holding tank that fits in the Vberth, we are removing ours. It's all working (but likely needs service). We only used the forward head for direct overboard outside the US, so nothing has gone into the tank for a few years now. It was used by the previous owner years ago but it's fairly clean (for a holding tank).

We're in Annapolis so you'd have to have a way to get it. I'll hang onto it for a few weeks in case anyone needs it. 

(We're replacing it with a Type 1 MSD treatment system, which is much smaller and will also free up valuable storage space under the Vberth).

David

J/46 #19

Shadowfax

[david hills]

I am curious about the MSD 1 device. Please share?
Thank you,
David
SV Raven J42

David Hills
Caretaker
Emery Farm
135 Piscataqua Rd
Durham, NH 03824
603-674-6412

I am my own strength, there is no other
I am my own weakness, there is no other
We are all one, there is no other

Sent from my iPhone

> On Jun 2, 2026, at 1:16 PM, David Jade <da...@mutable.net> wrote:
>
> Type 1 MSD treatment system

[David Jade]

Raritan makes essentially two versions:

One for salt water only heads and uses electricity to drive the sanitizing process. This is the ElectraSan. This version uses more power and makes having a fresh water head more challenging (you then need a small saltwater tank and pump to feed it because it needs saltwater to make chlorine to do the sanitizing. Salt is cheap but you also need a lot).

The other version is for fresh water or salt water heads but uses a dispenser you put special large chlorine tablets in. This is the PuraSan. This version uses less power, but requires the special tablets which are good for about 50 flushes and cost about 18 bucks apiece (they come in a package of six).

Neither of these have a holding tank. So every time the head is flushed, sanitized blackwater is discharged directly overboard. You can legally do this anywhere except EPA designated no discharge zones. But it’s not very friendly to use in a marina, even if it is legal to do so. We’ll solve this by keeping our second aft head as a conventional holding tank system for use when in a marina or in no discharge zones.

We’re going with the PuraSan model just to have the ease of keeping a freshwater head, but we’re actually building the system to be switchable between freshwater and saltwater. We’ll just have to keep a supply of the tablets onboard.

There is actually a third option, which is a hold and treat system, which is a treatment system and holding tank so that you can decide when to dump the treated blackwater overboard. This system uses more space than a holding tank alone. It’s also more complicated with multiple pumps, etc..

By the way, if you do have one of these, don’t ever flush the heads when you’re using a water maker as the discharged chlorine could get into your membranes and rec havoc.

David _/)
~~~~~~~~~~~~~~~~~~~~~

> On Jun 2, 2026, at 8:00 PM, david hills <davideh...@gmail.com> wrote:
>
> I am curious about the MSD 1 device. Please share?

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