Single pipe CH system - can you get manual full bore valves?

[crj80]

Hi,

I've recently purchased a 1960's house with a single pipe system installed. Common issue - the rads don't all get hot!
Over the years, TRV's have been installed on all rads, which look like the standard type (reduced bore, not full bore).

I want to give the old system a chance, and replace the older rads along with all the valves, and give the rads I want to keep a good flush out.

Question is... I've read that I need full bore valves for the system to work properly. Can you get standard manual full bore valves/lockshields, or are all manual valves/lockshields the same?

Many thanks

 

[ShaunCorbs]

tbh not worth it, you would be better spending your money on a new two pipe system sorry to say

 

[lame plumber]

full of crud, needs cleaning and balancing to get it working, but by far the best option is to switch to twin pipe system

 

[crj80]

Yes, that would be better - but very expensive. I've got nothing to lose by changing a few rads and valves and trying it. If it doesn't work, I bite the bullet

Do you have any ideas on the valve question?

 

[ShaunCorbs]

Yes, that would be better - but very expensive. I've got nothing to lose by changing a few rads and valves and trying it. If it doesn't work, I bite the bullet

Do you have any ideas on the valve question?

thats the thing dont think you will be changing any rads as they would be imperial/odd sizes

why not bite the bullet and save your money from changing valves to put to a new two pipe system

 

[Chalked]

As above. Re-pipe. Cheaper in the long run.
You could replace all the rads and trv's ( danffoss make one for one pipe. It's big and ugly!) and after still won't work.