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Have they been pressure tested?
I would do this first before going through everything else then finding leaks.
Discuss Old cast iron column radiators flow return-urgent help in the Plumbing Jobs | The Job-board area at PlumbersForums.net
Have they been pressure tested?
These rads are not designed to work at 3 bar pressure which is the safety valve setting on your combi.
They have spent there lives so far in open vented systems with a head pressure of a floor or two i.e. 0.6 - 1bar.
If I were you I would be testing them first as SimonG suggested, then I would fit a safety valve with a lower setting to the system!
BTW - TBOE for the con's
Hi everyone,
need a bit of help again please with a couple of problems
So we had x20 radiators and we managed to get the cap-end/ valves off x18 of them to swop and do the bottom-bottom flow/ return.
Then problem 1 developed Unfortunately- we managed to shear the valves clear of the remaining 2 using our big trusty steel pipe :S and the thread is now stuck inside. We have tried gently sawing to try and loosen/ hitting with a chisel and drilling but they won't budge. Does anyone know how to get these out other than praying for a miracle! We were going to try a steel merchant/ welder and see if they can drill them out?
Problem 2 is some of the fittings are in pretty rubbish condition so I don't know whether to get new. For some radiators its 1.5" opening and others its 1" so I was going to get these reducing bushes to fit our 15mm valves and put new stop ends on-are these the right type?
Also been advised to use LSX sealant when fitting the stop ends-is this the best one do you think?
Thanks-any advice much appreciated
Elli
Fittings
JTM Brass flanged plug-threaded brass
1"
1.5"
JTM Brass hexagonal bush
1.5" to 0.5"
1" to 0.5"
Reply to Old cast iron column radiators flow return-urgent help in the Plumbing Jobs | The Job-board area at PlumbersForums.net
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