We're repiping the whole lot into a feed and return system in the summer so I want to do this job as cheaply and easily as possible, plus the pump that's gone is pumping the flow down into the underfloor downstairs pipework which might explain why it's failed and why it looks a lot newer than...
The pump and valves need replacing on my single pipe heating system, but it's been put into a small space next to the boiler. Only ball valves will fit and one is leaking, but I don't like ball valves.
Only answer is to move the pump to a pipe which takes the water from the downstairs rads to...