I have several of these. I fitted a new one a few days ago. It's on mains supply so I fitted the higher pressure flow restrictor (I haven't got a presssure guage). It is connected via a braided flexible tap connector. It is one of the later ones with a "inverted cup" float open at the bottom rather than the sealed "can" float I have used before. The cup is full of air.
I now goes "brrrrt" as it reaches the moment to shut itself.
It didn't on the day I fitted and tested it.
Anyone know why and how to cure it?
I now goes "brrrrt" as it reaches the moment to shut itself.
It didn't on the day I fitted and tested it.
Anyone know why and how to cure it?

