Mashing machine waste: will this work?

[Wwkparis]

Hello to all!
looking for a bit of advice here.
I want to connect my washing machine to the sink waste which is a bit far and I don't want to go through the kitchen units but underneath. I obviously don't want to overload the pump.
Will it work if I do as per my drawing (the red line)?
The blue rectangle between the fridge and the washing machine is a partition wall.

Let me know what you think...
Thanks

 

[chris watkins]

You will knock the hell out of the pump.
It is the going up, down and then up again that it will not like + a pipe run of more than 2Metres.

It would just about work if you could run with a slight fall from the top of the W/M to the sink but otherwise recommend you think again.

BTW welcome

PS nice drawing but you must have long arms as that sink is a bit low. :yes:

 

[Wwkparis]

Many thanks for your reply and your welcome.
I was in fact thinking to have the pump to just do the first up. I was hoping that the rest of the water draining would do it on its own by the weight of the water like a huge U-bend... or would it be to slow to drain?

 

[Wwkparis]

sorry i missed the end.
The sink is not low but that would be the level where it connects to the waste pipes (under the sink).

 

[Wwkparis]

Re: Washing machine waste: will this work?

sorry i missed the end of your message.
The sink is not low but that would be the level where it connects to the waste pipes (under the sink).

 

[chris watkins]

sorry i missed the end.
The sink is not low but that would be the level where it connects to the waste pipes (under the sink).

Only teasing, I know your arms wouldn't be that long ………………………………………….just short legs.

It's the water that is left in the pipe under the units that the pump won't like, it is called double trapping, the pump will have to compress the air in-between two slugs of water before it can get it to let up to the sink waste.

Is it not possible to run behind the fridge either by pulling it out a bit or cutting a chase in the back wall, only needs to be 25mm x 25mm?

 

[Unregistered]

Hi Chris,
I was hoping to not have to go behind the fridge as its already quite bigger than the depth of the units.
what about if i do that: (sorry trying to find how to put a photo)

 

[Wwkparis]

What about this?

 

[chris watkins]

What about this?

Pipe work will just fill up with all the soap & rubbish from the machine as there will not be a self- cleaning velocity through it & do not think there would be enough head at machine end to push the water out into the sink trap.

I can only suggest a pump unit under the sink to break the run something like this Product details for SANIVITE

BTW sinks is much better now :clap:

 

[Wwkparis]

Well...It looks like i will have to rethink my project...
many thanks for your help!

 

[Best]

Run a 40mm waste pipe along the base of units giving it a very slight fall.
Or if you don't want to go behind the fridge then run waste from behind the tall unit to the sink waste, if it is low going down to drains. WM drain hose then just needs to do short distance behind fridge.
Use a stand pipe incorporating a trap, which you can buy as one piece.
Don't worry if you have to cut the back of tall unit for access

 

[Wwkparis]

Thanks Best for your reply.
I didnt want to touch the units neither...
After all the distance is not that big between the washing machine and the drain...
Could i just run a 2.5m extension waste flex under the units and climb the 2 feet under the sink?

 

[rpm]

Could i just run a 2.5m extension waste flex under the units and climb the 2 feet under the sink?

Nope! See post #9, same principle applies. If you use a pump just be careful where you connect the outlet pipe to the sink pipe or keep the plug in all the time.

 

[PlumbBobBob]

don't the cabinets have a service space at the back of them? can you not run the waste in this space ?

 

[Wwkparis]

Hello to all,

Thank you for all your replies and advises.
I decided to simplify my life by ignoring them all ;-)
I bought a 2.5 meter extension for the waste pipe and ran it on the floor under the units until it goes a bit up to connect to the sink waste. Works fine for now. Might have to clean/replace the pipe time to time (like once a year) but since it cost £5 that shouldn't be such a prob.
It took me a couple of hour to do it all (unconnect, cut passage in the wall, cut holes through units, re-connect) so i guess thats sorted.
Many thanks again to you all.
Best regards

 

[chris watkins]

WM pump may be a bit more of an expense than the hose but good luck.

 

[gassafe]

I did this once, but it was only temporary until the lady had a new kitchen... It worked okay.

I would not go up from the back of the machine tho as it makes the pump work harder... I did it all low level & only rose up to terminate into the washing machine upstand near the sink

 

[Wwkparis]

There was actually an error in my drawing. The pipe start at the top of the washing machine (at a higher level than the sink waste connection so i guess, all in all, the water as a tendency to push itself into the drain by, I don't know, mechanical property?
Anyway, time will tell.

 

[Howsie]

It's wrong but it will work for a while. Manufactures don't put restrictions on installations for the fun of it.

All the best.