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After replacing a leaking PRV, I noticed the system pressure was building up far too high, and passing water on the new PRV. On investigation, I checked the Scrader valve on the expansion vessel. By pressing in the centre of the valve I determined there was almost no air in the Ev, and since...

Hi, 4 year old rendering to outside brick walls has become detached in large areas, sometimes bulging out as much as 1 inch. It'll probably be dropping off in big plates by spring. In other areas there are horizontal hairline cracks, whch I assume match up with the underlying mortar courses...