In article , Lee Blaver wrote:
Wish I'd remembered to check that site before I bought the expensive and
troublesome to fit, Reliance valve a couple of days ago... :-(

Pressure was 7 BAR here when measured btw, also Thames Water.

THanks for all the replies: advice taken and acted on.

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Tony Bryer SDA UK 'Software to build on' http://www.sda.co.uk
Free SEDBUK boiler database browser http://www.sda.co.uk/qsedbuk.htm