Black/toilet waste pump-out pump

[dneve]

I have the Jabsco pump per sailmonkey which is simple and you can replace the rubber parts when needed. I bought it through Defender for $200+ and it is well worth it not to have to have clogged sewage lines. Spend the money and you will be much happier over the long term.

[Smokeys Kitchen]

We use a Johnson SPX pump. It is a diaphragm pump and can run dry. No issues after 2 years.

https://www.spxflow.com/en/johnson-p...wer-32-vacuum/

[coopec43]

Originally Posted by boat driver

The schematic is correct depending on the tank design- but ideally head discharge into tank top- then bottom drain as described and install macerator or decent large inlet pump post the T fitting to deck-
.

It is a tried and proven system installed on boats that have added a holding tank. People who have seen the design of my holding tank approve of it.

Originally Posted by boat driver

as well add a ball valve at the tank discharge before the T fitting- this provides three opportunities- if the seacock/macerator gets dried out and/or clogs- close valve and flush with deck wash 2) if the tank sits for storage and/or period of time it can dry out and get "solid" - close seacock and fill tank with deck wash then after time flush 3) if need to work on macerator /pump I will bet the tank will not be empty.........

I've always planned to flush the system with sea water quite often. Maybe I am wrong but I hope that would stop smell from permeating through the plumbing?

Originally Posted by boat driver

If tank can get above the waterline then gravity will take care of needing the macerator or any pump.

I can't get the tank above the waterline so that was not a consideration


Clive

[coopec43]

Originally Posted by Tayana42

I use a Whale Gusher Titan with a nitrile diaphragm to empty my holding tank when beyond the 3 mile limit. I have a VacuFlush toilet to 30 gallon holding tank that empties to deck pump out or the Gusher Titan connected to a below the waterline through hull for discharge.

Thirty gallon holding tank WOW!

I didn't think of a manual pump. A whale Gusher would make short work of emptying a holding tank. I have an unused Henderson Mk 5 in my workshop which can shift 23 g/m and I think it would be a lot less troublesome than a 24V pump.

Thanks.

Clive

[coopec43]

Originally Posted by Smokeys Kitchen

We use a Johnson SPX pump. It is a diaphragm pump and can run dry. No issues after 2 years.

https://www.spxflow.com/en/johnson-p...wer-32-vacuum/

The Johnson SPX costs $415 in Australia.......


Clive

[Tayana42]

Coopec43, it takes me just about 50 strokes to empty my holding tank with the Whale Gusher Titan manual pump.

[coopec43]

Originally Posted by Tayana42

Coopec43, it takes me just about 50 strokes to empty my holding tank with the Whale Gusher Titan manual pump.

Some exercise and virtually nothing to go wrong!

You've convinced me.....

Clive

[coopec43]

QUOTE:
Originally Posted by Tayana42
I use a Whale Gusher Titan with a nitrile diaphragm to empty my holding tank when beyond the 3 mile limit. I have a VacuFlush toilet to 30 gallon holding tank that empties to deck pump out or the Gusher Titan connected to a below the waterline through hull for discharge.QUOTE

When you said you had a 30 (US) gallon holding tank I was impressed. I've just tested mine as I was really guessing until now but now find mine is 32 (US) gallons!

I suppose they are never big enough. This link should make interesting reading.
https://theboatgalley.com/what-size-holding-tank/


Clive

[Tayana42]

30 gallons is good for two people for 3-4 days, maybe 5, with the VacuFlush and using plenty of water for flushing. Four people on board seem to fill it up more than twice as fast.

[coopec43]

Originally Posted by Tayana42

30 gallons is good for two people for 3-4 days, maybe 5, with the VacuFlush and using plenty of water for flushing. Four people on board seem to fill it up more than twice as fast.

You are not eating your dinner are you?

I've just been reading that some people don't flush the toilet paper into the holding tank as it takes room. They have a special bin in the toilet (with an air-tight lid) for used toilet paper!! I wonder what they empty that into?

Maybe a composting toilet is the way to go?

Clive

[kmacdonald]

Options are good. Head directly overboard or to holding tank. Holding tank to pump-out or overboard.