You are reading a single comment by @mashton and its replies.
Click here to read the full conversation.
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
@mashton
It is def true that those two motorised valves are two port. But there are two of them, so it is possible that they work in tandem as some kind of y plan.
Presumably the boiler (which is not combi?) usually works by filling that tank with hot water.