Boiler Pressure Keeps dropping advice needed
On Wed, 17 Jul 2019 15:11:40 +0100, Harry Bloomfield wrote:
Isolator valves don't usually completely isolate, they will still pass
some water.
Gate valves yes, ball valves are much more reliable. I think I've got
rid of any gate valves in this place...
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Cheers
Dave.
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