I hate the Jabsco bog ....

[Refueler]

My new acquisition has a Jabsco bog ....

Due to Swedish guidelines - it has a rats nest of piping.

It is requested that bogs discharge to holding tanks and then HT is pumped to shore. But problem is that there very few pump out locations ! So its usual that the bog can be directed a) to tank, b) to sea.

That sounds simple enough. Until you add in the req't to pump tank to shore or to sea ...

My bog has a three way valve - position 1) closed, position 2) which directs bog content to the Mk V pump to pump out to sea, position 3) to the holding tank.

The sea outlet valve is downstream of the Mk V hand pump.

Now this sounds OK ... but in reality - the bog backfills ... why ? Because of the Jabsco system of the 'flick valve' on the pump body. Its very nice having one pump do IN and OUT .... but here it just fails ...

I assume it needs a good service ...

Once boat is lifted - we plan to do the unmentionable job of disconnecting pipes and try to create a better setup - plus service the Jabsco. The pipework is a mess - your hand comes away with nicks and scrapes using the system. as we need to close off all valves to try stop the backfill.

My other boat has the Royal Baby Blake ......... much simpler ... far better ... but maybe that's why it costs so much !!

 

[Bristolfashion]

I'm not entirely sure that moving away from "bucket & chuck it" was an improvement!

 

[rogerthebodger]

My black water tank has 2 outlets on the top of the tank one does to a pump out connector and the other uses a pump to pump black water out via a skin fitting to th sea.

No valve is involved.

My head outlet has a 2 way valve to direct the head outlet either to the same skin fitting as the black water tank outlet or to an inlet on the top of the black water tank.

If you include the air vent there are 4 connections to the tank 1 in 2 out and 1 vent,

This reduces the valves needed and only hs one valve to direct black water either to sea of tank from the head.

I converted my jabsco to electric pump out and pump flush water so its much easy to use for th ladies on board (press button and walk away the time of flush depends on the length of pipes and timer off delay.

 

[dunedin]

Nothing wrong with Jabsco pumps. But your arrangement does seem over complex. Our Scandinavian boat simply has the heads outlet connected into the holding tank. No diverts or alternatives. Simples.
The holding tank then has a gravity outlet from the bottom straight to the sea (left open when well offshore) and a pump out option from above (assumes the pump out station has its own pump)

 

[Plum]

My new acquisition has a Jabsco bog ....

Due to Swedish guidelines - it has a rats nest of piping.

It is requested that bogs discharge to holding tanks and then HT is pumped to shore. But problem is that there very few pump out locations ! So its usual that the bog can be directed a) to tank, b) to sea.

That sounds simple enough. Until you add in the req't to pump tank to shore or to sea ...

My bog has a three way valve - position 1) closed, position 2) which directs bog content to the Mk V pump to pump out to sea, position 3) to the holding tank.

The sea outlet valve is downstream of the Mk V hand pump.

Now this sounds OK ... but in reality - the bog backfills ... why ? Because of the Jabsco system of the 'flick valve' on the pump body. Its very nice having one pump do IN and OUT .... but here it just fails ...

I assume it needs a good service ...

Once boat is lifted - we plan to do the unmentionable job of disconnecting pipes and try to create a better setup - plus service the Jabsco. The pipework is a mess - your hand comes away with nicks and scrapes using the system. as we need to close off all valves to try stop the backfill.

My other boat has the Royal Baby Blake ......... much simpler ... far better ... but maybe that's why it costs so much !!

In my long term experience, I am very happy the the Jabsco heads. Have never had one block, easy to service and service kits stocked in almost all chandlers..

 

[Daverw]

We pump into tank, either empty to sea if bottom valve is open or if closed fill tank then empty via pump out deck fitting, no divert valves needed

 

[Refueler]

We pump into tank, either empty to sea if bottom valve is open or if closed fill tank then empty via pump out deck fitting, no divert valves needed

I agree .... should be simple setup .... but my boat has a setup that you can understand the idea - but in actual implementation fails ...

One of the problems is that guy has tried to get the Jabsco to pump through the MkV hand pump to sea .... yes it will do it of course - but once bowl cleared - then you need to pump the MkV to clear the pipes and its contents .... which are more than you imagine !

We are considering removing the 3 way valve and converting system. Leaving the tank and pipes in place for any nosey parkers !!

 

[john_morris_uk]

Jabsco toilets are so bad there are multiple thousands of them fitted to thousands of boats.

It’s not the toilets fault it’s plumbed in badly.

If it’s of any interest our aft heads Jabsco outlet goes to a two way valve. You select ‘to sea’ or ‘to holding tank’. The holding tank has its own pump out pump, or you can pump out through a deck fitting as normal. I’m not overly fond of the gravity to sea systems that empty holding tanks as I’ve experienced them blocking. My idea of fun doesn’t involve snorkelling and poking wire up the discharge skin fitting waiting for a shower of…

 

[Refueler]

Jabsco toilets are so bad there are multiple thousands of them fitted to thousands of boats.

Every brand has its monday morning / friday afternoon examples ......

My Jabsco is a dog as setup. My Blake is a real treat after my Jabsco !

I can only assume that previous owners never serviced the Jabsco - had a yard plumb it in and was never trialed properly.

 

[rogerthebodger]

One of the problems is that guy has tried to get the Jabsco to pump through the MkV hand pump to sea .... yes it will do it of course - but once bowl cleared - then you need to pump the MkV to clear the pipes and its contents .... which are more than you imagine !

I have a diaphragm pumping out from my Jabsco but I do have a sea water pump to flush water into the bowl

Can you post some pcs of your setup.

 

[Refueler]

I tried to photo it ... but it really is a rats nest of pipes inside the washbasin stand ... photo could not show the valves behind pipes etc.

The bog has a small bore line from seawater general inlet that serves washbasin / sink etc. A valve next to the Jabsco pump box isolates if needed.
The large out pipe enters the washbasin stand through to the 3 way valve.
The 3 way then diverts 1) to holding tank ... 2) to the MkV pump out to sea ... 3) supposedly - need to test - for pump out from tank.

The piping as far as we can tell does not actually allow the MkV to pump tank to deck for emptying ....

It all looks simple ... but so far use of the 3 way has proven to be a problem. It may be possible that the 3 way is worn out and passing ... once boat is lifted - we plan to dismantle and see how to modify to a more sensible ..

There is no way present setup is usable for 'wife' !!!!

 

[john_morris_uk]

Every brand has its monday morning / friday afternoon examples ......

My Jabsco is a dog as setup. My Blake is a real treat after my Jabsco !

I can only assume that previous owners never serviced the Jabsco - had a yard plumb it in and was never trialed properly.

Baby Blake’s are fantastic but I can’t justify spending more on a toilet than the cost of a second hand family car.

Baby Blake Marine Toilet

Of course if money is no object go Victory

Victory Blake Toilet

£8295 for a loo…!

 

[Refueler]

Baby Blake’s are fantastic but I can’t justify spending more on a toilet than the cost of a second hand family car.

Baby Blake Marine Toilet

I'm lucky - my other boat came with it ...

In 25 odd yrs of ownership - it has never needed servicing ... it works as good today as it did when I first bought the boat ... The split two pump system is so simple even the 'wife' can use it ...

 

[rogerthebodger]

As I posted early I only have a whale 2 way valve to divert the output from the head to either overboard to your waste tank.

The pump out of the tank has a seperate connection to the tank.

The output from the tank just ha a simple tee to connect to the single skin fitting

A second outlet from the tank to the deck fitting should not need a pump as most pumpout units just suck the waste out of the tank.

 

[VicS]

The piping as far as we can tell does not actually allow the MkV to pump tank to deck for emptying ....

Is the deck pump out fitting not for a shoreside system to suck the waste out directly from the tank as Roger suggests ?

No "rinse out" deck fitting ?

 

[Refueler]

Is the deck pump out fitting not for a shoreside system to suck the waste out directly from the tank as Roger suggests ?

No "rinse out" deck fitting ?

We don't know ... yet !!

We assume so ...

Like many areas - pump out facilities are very hard to find over here ...

 

[PaulRainbow]

The deck pumpout should not have an onboard pump, or you will likely spray everything around you with the tank contents.

When flushing to sea, the Jabsco pump is meant to pump through the MK5. With the diverter set to the holding tank, the Mk5 would be used to empty the holding tank.

 

[Refueler]

The deck pumpout should not have an onboard pump, or you will likely spray everything around you with the tank contents.

When flushing to sea, the Jabsco pump is meant to pump through the MK5. With the diverter set to the holding tank, the Mk5 would be used to empty the holding tank.

I am aware of that ... should be

The problem here is whether the setup actually does that ... my diagram is based on what we assume it is ... as said we have tried combos of what would appear to be a simple set valve xx and pump - but in fact does not.

We even consider that the 3 way valve handle - which conflicts with sea out handle is actually 180 deg out of position ... but even that does not solve it.

We can pump out the bog .. we apparently can pump out the tank .... to sea. But we get backfill - not everytime - but about 50% of time bog is used ...

Honest - it just does not compute !! The only possibility we can come up with is faulty valves.

 

[lustyd]

I'm not entirely sure that moving away from "bucket & chuck it" was an improvement!

I feel the requirement not to discharge overboard would make your bucket a bit offputting on a week long cruise

 

[Bristolfashion]

I feel the requirement not to discharge overboard would make your bucket a bit offputting on a week long cruise

And need a REALLY big bucket!