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microbore

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  1. M

    Issues with microbore heating

    Hi everyone. I'm currently working on a job for a customer. their radiators are not all heating up. in total there is 12 radiators. 4 of these are on 15mm pipework, the rest are on 10mm. its powered by a Grundfos ups3 pump. the boiler is an 18kw heat only boiler. There are two radiators mainly...
  2. Zig168

    Should you powerflush a microbore system

    The system is about 20 years old and has never been cleaned. The radiator water looks like tar and several radiators are warm at top and cold at the bottom. What would be the best steps to clean the system? I have spoken to several engineers. One only recommends a magnacleanse due to being a...
  3. B

    Microbore pipe showing above radiator!!

    Newish house with radiators that have microbore pipe but on one of them the pipe is sticking up above the radiator which looks unsightly. Is it possible to push the excess pipe back into the wall? I'm worried about causing a leak.
  4. R

    microbore valve connection

    Hi all, just removed a radiator while decorating. One side was easy, the other just spun round and is now leaking. Have drained down system but not sure how to fix leak (not seen this connector before) ps was really tight - split the olive? The whole connector is spinning round. Thanks in advance.
  5. W

    How to remove elbow in photo

    I am replacing the radiator and need to solder a fitting new the existing elbow. I am concerned the heat will damage the elbow but have not seen this type before and would like advice on removing the copper microbore so I can solder a joint onto it then refit it in the elbow. Is it similar to a...
  6. E

    Replacing old microbore manifolds

    Hi, Have a couple of old microbore 28mm to 10mm manifolds for the central heating. Not sure of the condition on the inside of them but outside there's a fair bit of corrosion at the solder/compression joints. There not leaking so was wondering if they can be cleaned or if it's better to...
  7. D

    Can I add another radiator on this microbore manifold?

    I have what appears to be a single pipe system? with microbore manifold downstairs, and I'm assuming another upstairs under floorboards, both with 3 radiators. The photo shows the downstairs manifold, and looking at the way the other radiators are connected, is there any reason why connecting...
  8. M

    System boiler and plastic 10mm pipes to rads

    I am told I need to replace my boiler. I am considering a system boiler so I can lose the tank in the loft and feed it direct from the mains water. My rads are fed by 10mm plastic pipe. Is there much of a pressure increase with a system boiler and will the plastic pipe joints (e.g. John Guest...
  9. D

    How to remove elbow from microbore pipe

    Hello, I want to change the valves on a radiator but am unsure of how to remove the elbow joint that goes into the plastic pipe.
  10. gb17342

    Should I replace this radiator pipe?

    This radiator pipe got stepped on and now has a kink, if you can see in the pics. Should I get it cut back and a new bit soldered on or will it be alright as is? It's not leaking but presume it's going to restrict the flow, does that matter..? It's the pipe with the return valve it's not the...
  11. R

    CH with Microbore bypass loops and proper bypass valve

    Hi - and thanks in advance for reading - just joined... I have been looking into why my heating takes ages to warm up - had the system power flushed and lots of things checked... Today, I found this: This is one of 4 manifold pairs - and it also feeds the worst of the radiators for not...
  12. Frelon

    Help with microbore connections!

    Hi all I am in the process of replacing the boring sink and pedestal in my cloakroom with a free standing cabinet (with drawers underneath) and a basin on top of the work surface. The house is 6 years old and all plumbing (apart from airing cupboard) appears to be 10mm microbore plastic. I...
  13. S

    Power flushing blocked microbore

    I am a homeowner after some advice about power flushing a central heating system with microbore pipes that seem to be blocked. When I switched the boiler on in October, 3 of 12 radiators never warmed up and 2 other radiators became only lukewarm. My plumber concluded the pump in the 11-years...
  14. C

    Upgrading microbore to 15mm

    I have bought a house which needs a new heating system as it currently has a knackered old electric boiler. It’s currently running 8mm microbore which I’ve read enough about to know its rubbish and worth replacing while I have easy access to all pipe work. My question is about how to actually...
  15. P

    Changing Radiator using microbore pipes

    Hi all - new to the forum I have attached a couple of pictures. I need / want to replace the radiator as it's old and rusted as can be seen. ALSO I really want to replace the awful valves each end for new shiny chrome style units. Im 100% happy with the draining / refilling / inhibiting of the...
  16. A

    Advice on replacing Microbore pipes

    Hi I have a radiator in my kitchen which I would like to change. I was confident changing the radiator until I realised that it has 8mm Microbore piping running off through a wall and feeding another radiator. This is pictured here The radiator which I’m looking to install is a cast iron...
  17. gingalig

    Ufh, with microbore rads

    Apologies if its already been covered. I've been asked to quote on a heat only with a solar compatible unvented, the existing system is 10mm microbore gravity fed to rads. I'm confident of the conversion and have my gas safe and G3, I've also been been asked to provide an outlet for, and install...
  18. C

    UK Twin valve microbore on new pressure boiler

    Last year we had a new pressurised system put in and left our existing rads in place. Downstairs are all fairly modern rads with TRVs etc however upstairs are still the original rads from 1980 with 8mm microbore and twin valves, no TRVs. I'm looking for some advice really on where or not we...
  19. J

    Hello and help with a microbore system!

    Hello everyone, I have just moved into a 4 bed house which needs a bit of doing up, the heating/hot water is my main concern. The house was built in 1985 and has microbore for the central heating and some of the rads don't get hot. The boiler is an ideal HE24 fitted in 2007 which is in the...
  20. D

    Yorkshire peglar microbore manifold Wm18 22mm x 8mm

    I need to fit another rad and have spare outlets on the manifold. This manifold is now obsolete. Standard 8mm olives do not fit. I have found Legris brass compression olives at RS online which i would describe as a collared olive. Would these be suitable? Mytub.co.uk shows an illustration of the...
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