It’s a check valve (sometimes incorrectly called a non-return valve). Iirc they’re only required on certain machines, most now have an air gap to fill the water. Just research your machine if it needs one.
Suddenly I've got no water upstairs, but no evidence of leaks anywhere
- Thread starter dragonfly101
- Start date
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Thanks, wasn’t a very good check valve then, was happily letting water through the wrong way for 36 hours before deciding to stop it.
Aye, but could have been the mute nuts of check valves and just failed
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