J
joeread
Why would you not fit a service valve on the primary feed pipe to a central heating system?
thanks
thanks
as well as transams excellant explanation because it is a feed and expansion pipe, so as well as the water running down into the system it also goes back up into the tank under normal use so if it was inadvertantly shut the water could not go back up into the tank and would end up going back up the vent pipe
Big fat 2 years to late
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