B
breezer
you said "What about these antisiphon/non-return devices which you can get to fit on the waste pipe from washing machine. Does anyone have any experience with these?"
what about them? what problems are you having? i personally do not like them as they (in my experiance) tend to get jambed open or partialy open
what about them? what problems are you having? i personally do not like them as they (in my experiance) tend to get jambed open or partialy open