Adding dish washer waste under sink

BrokenArrows

The washing machine currently connects to a compression fitting on top of the trap.

Its an IKEA trap, so its hard to modify.
Here is the trap. You can see the connection point on top. http://www.ikea.com/gb/en/products/kitchen-products/kitchen-taps-sinks/lillviken-water-trap-strainer-1-bowl-art-10311539/

Is there a way to connect this single compression fitting into a double?

I can't find any adapters online.

BrokenArrows

This is a pic of the plumbing.

Ideas on how to connect both a washing machine and dishwasher at the same time.

colm_mcm

Which side is the dishwasher at? Which side is the washing machine?
Is that the large flexible hose you're using? Where does that end up?

I did something similar to what you're doing but it was a little different setup.

BrokenArrows

colm_mcm wrote: »

Which side is the dishwasher at? Which side is the washing machine?
Is that the large flexible hose you're using? Where does that end up?

I did something similar to what you're doing but it was a little different setup.

The washing machine is on the left and dish washer is on the right.

I didn't use the large flexible hose from IKEA. I plumbed the water trap directly into the waste pipe.

The flexible pipe from either washing machine or dishwasher connects to the connection at the top of the water trap, on the right side of the picture.

BrokenArrows

Ok i think this is probably the best i can do.
Connect both the washing machine and dishwasher to this, and connect this to the existing single.



Anyone have any idea if ill have problems with the washing machine feeding into the dishwasher and Vice versa.

colm_mcm

I got an easy-plumb one way valve that clamps on to the outside of the kitchens waste pipe. You drill into the pipe with a supplied small hole saw then the fitting bolts together outside. Works very well, it's in 2 years. Think it was €18 in woodies


This
http://www.topline.ie/plumbing-heating/plumbing/pipe-fittings/plastic-fittings/easi-plumb/plumbing-out-waste-kit

BrokenArrows

Humm, i hadnt thought of using a one way valve to prevent the waste smell from coming back through a connection below the water trap.

I have one of those kits already but its not a one way valve, i guess i can pickup a one way valve somewhere for it.

colm_mcm

The one way valve is just to stop water coming back into the machine. It's handy to have the valve accessible if possible as I had to clear fluff out of it after 18 months.
That IKEA setup was a nightmare to try and get 2 appliances into so that worked well for me anyway.

BrokenArrows

colm_mcm wrote: »

The one way valve is just to stop water coming back into the machine. It's handy to have the valve accessible if possible as I had to clear fluff out of it after 18 months.
That IKEA setup was a nightmare to try and get 2 appliances into so that worked well for me anyway.

The one way valve should also stop the sewer gas from coming back up.

Cerco

BrokenArrows wrote: »

Anyone have any idea if ill have problems with the washing machine feeding into the dishwasher and Vice versa.

I had a problem with washing machine. Error indicated a blocked pump. Turned out to be crud, grease etc. from the dishwasher which had gotten into the waste outlet hose from the washing machine.
Not an IKEA solution, just a standard sink outlet with two additional ports, directly opposite each other, for dishwasher and washing machine.

Very surprised that washing machine waste water did not clear itself.

The Red Ace

Ideally a w/m shouldn't be connected to an undersink spigot as unlike a dishwasher it doesn't have a non return valve fitted to the pump. A waste hose has to have an air break above the water level in the machine otherwise it will syphon during the rinses which will cause all sorts of problems. with the Ikea fitting I cant see it being fool proof unless the sink stopper is left out to create the air break

colm_mcm

The Red Ace wrote: »

Ideally a w/m shouldn't be connected to an undersink spigot as unlike a dishwasher it doesn't have a non return valve fitted to the pump. A waste hose has to have an air break above the water level in the machine otherwise it will syphon during the rinses which will cause all sorts of problems. with the Ikea fitting I cant see it being fool proof unless the sink stopper is left out to create the air break

Wouldn't the overflow provide this air break?

dodzy

The Red Ace wrote: »

Ideally a w/m shouldn't be connected to an undersink spigot as unlike a dishwasher it doesn't have a non return valve fitted to the pump. A waste hose has to have an air break above the water level in the machine otherwise it will syphon during the rinses which will cause all sorts of problems. with the Ikea fitting I cant see it being fool proof unless the sink stopper is left out to create the air break

I've connected many washing machines just like this. Never an issue.