Can I plumb a macerator (Sanicompact) in with sink and washing maching?

[Reejoc]

Currently looking to convert a pantry into a downstairs washroom. There is already 40mm pipe for a washing machine and no possibility of connecting to 110mm waste so a macerator (sanicompact) is the only solution.

Is it possible to connect these 3 units up and prevent backflow from the WC i.e one way valve such as this? There isn't an easy way of having a separate pipe for the toilet.

Thanks

 

[LawnMower]

Yes! https://jpumps.com/shop/all-macerator-pumps/aquabest-3-in-1-macerator/ shouldn't need a one way valve unless the outlet pipe gets blocked, but by then you are going to have a problem anyway. Just toilet paper and normal usage is ok. No paper towelling, condoms or sanitary pads!

Ps, washing machine trap to stop smell! https://www.toolstation.com/shop/Pl.../sd2705/Washing+Machine+Trap+76mm+Seal/p77636

 

[Hot&Cold]

Going by your information,its best to connect the poo muncher independently direct to a soil pipe.

 

[just pumps]

To answer the question No you can`t connect the washing m/c to the Sanicompact.
To recommend the Aquabest means you have never seen a compact.

 

[just pumps]

Going by your information,its best to connect the poo muncher independently direct to a soil pipe.

Come again? You mean have 2 pumps?

 

[polesapart]

There isn't an easy way of having a separate pipe for the toilet.

However:

https://www.diynot.com/diy/threads/macerator-toilet-can-they-really-be-that-bad.136213/

 

[just pumps]

The most accurate comments are towards the end, written by people that understand them and their shortcomings.
It is the same as people leaving reviews, it is normally the disheartened that leave reviews and the happy ones rarely bother. I`ve been working with them for +17yrs now, some customers I see every year and some every 5yrs which I think say`s it all.

 

[Hugh Jaleak]

People need to accept that like any device, they have their limitations. Too many use the WC and sink as an extension to their bin, when in reality, it should only be the 3 P's going down a WC. Pee, poo and paper. Treat them with respect, and you'll have a lot less issues.

 

[Reejoc]

OK well thanks for the replies, based on which I've decided to run a separate 32mm pipe from the Sanicompact and leave the washing machine and sink free draining into the existing 40mm.

Another question - the proposed drain is a ceramic gully which currently takes waste from the kitchen sink and appliances. There is no separate surface water / foul water system as this is an old house. Is it ok to drop the toilet pipe directly into this or is further information about the drainage system required? Also what would be the best way to prevent smell from the gully?

 

[just pumps]

Check you have at least the minimum required water pressure to activate the compact.

 

[Madrab]

Is it ok to drop the toilet pipe directly into this or is further information about the drainage system required? Also what would be the best way to prevent smell from the gully?

I wouldn't have the outflow from a macerator running into an exposed gully, it really needs to be fed into an enclosed soil pipe. Where does the toilet currently outflow to?

 

[Hugh Jaleak]

If you are connecting a WC to this macerator, it must connect directly to the drain. Discharge into a gulley is strictly against the rules, and if nothing else, it will stink to high heaven! Even if it's just pumping water, I wouldn't run it to a gully.

It needs connecting directly to a stack, and if no stack is available, you will need to fit a stub stack, connected to the drainage system.

 

[just pumps]

If you are connecting a WC to this macerator, it must connect directly to the drain. Discharge into a gulley is strictly against the rules, and if nothing else, it will stink to high heaven! Even if it's just pumping water, I wouldn't run it to a gully.

It needs connecting directly to a stack, and if no stack is available, you will need to fit a stub stack, connected to the drainage system.

Totally agree Hugh and it changes nothing that you said but the compact is a regular looking pan with a small pump/ motor box built in.

 

[Hugh Jaleak]

Totally agree Hugh and it changes nothing that you said but the compact is a regular looking pan with a small pump/ motor box built in.

Ah ha, thanks. I didn't twig, (teach me to comment when I'm half asleep), yes direct connection to the drain only!