Is this drain hose plumbed incorrectly?

[erlendd]

I feel like this drain hose might be incorrectly plumbed. In the manual for the machine it says it should be slotted in to an opening, with some space around it (to prevent a vacuum/siphoning effect). Here it’s plumbed in directly with scree joints.

Also, should the drain hose go into the waste before or after the u-bend? I would have thought after made more sense.

Drain hose is the corrugated hose coming in from the left of the image.

 

[denso13]

Looks ok, fine the way it is.

 

[erlendd]

Thanks for the fast reply. What about the vacuum issue mentioned in the manual for the washing machine? Is it ok here because it can pull air in from the sink drain hole?

 

[denso13]

Is it ok here because it can pull air in from the sink drain hole?

That's correct, and if the plug is in the sink it will pull air from the overflow.

 

[erlendd]

If I wanted to put a second washing machine beside this what would I do? Do I just need to put a splitter on?

 

[Daveydub]

Waste hose should go up to underside of worktop then back down to connection point in order to stop sink waste back-filling washing machine

 

[Bod ...]

If I wanted to put a second washing machine beside this what would I do? Do I just need to put a splitter on?

Be sure to loop the hose up to top and clip before coming down into the waste.