View Single Post
  #9   Report Post  
Posted to uk.d-i-y
newshound newshound is offline
external usenet poster
Posts: 8,019
Default worcester bosch boiler pressure

On 18/11/2020 10:23, AJH wrote:
On 17/11/2020 23:33, John Rumm wrote:
that causes the emergency pressure reduction valve to dump some water
out of the blow off pipe outside

IME once one of these cracks open at over pressure they do not reseal
well and continually leak slightly thereafter.

That's been my experience too