Just moved into a new home and found that when my washing machine is draining water is coming up through sink, it only fills about one third of the sink, dont think there is a blockage because the water drains away quickly enough when you fill the sink and drain it, I know there is a rather long run on the waste pipe before it enters the main waste pipe and presume this has something to do with it. Is there any simple method of resolving this like a no return fitting that can be installed between sink and washing macine waste connector to stop back flow
Washing machine waste back flow into kitchen sink
- Thread starter shaw7380
- Start date
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longdogs
Not sure where your washing machine waste goes to;
If the hose goes directly into the sink trap then you can't have any kind of non-return valve because the water is going in the direction it is supposed to ie: away from the w/machine.
If the waste goes into a 40mm pipe via a clamped fitting then suppose you could fit a 40mm non-return valve on the sink side of the waste pipe if there is enough space. Personally I would suspect some kind of blockage though.
If the hose goes directly into the sink trap then you can't have any kind of non-return valve because the water is going in the direction it is supposed to ie: away from the w/machine.
If the waste goes into a 40mm pipe via a clamped fitting then suppose you could fit a 40mm non-return valve on the sink side of the waste pipe if there is enough space. Personally I would suspect some kind of blockage though.
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