Central Heating radiator pipe centres

[macadonald]

Hi Guys,

Quick question. As part of my restoration, I have the opportunity to place some new vertical pipes thropugh the floor boards to the valves. The original pipes are old and bent and generally knackered. As I don't have the original radiators and will be buying new ones, my question is:

Are pipe centre distances standard on most radiators? I'm not talking about expensive designer radiators, but rather a standard double panel type radiator. I realise that this will depend on the radiator size, but again are there set sizes?

Thanks

 

[leakydave]

As a general rule I go for 43mm on each end of rad length to accommodate pipes... what do other installers go by?


ie 1000mm rad, leave pipe centres at 1086mm

 

[muggles]

I add 45mm to each end but yeah somewhere around there generally works. As for distances off the wall, this varies wildly with the radiator manufacturer so you'll need to get a spec sheet off them (or we can find it if you tell us which brand of rads you are using...)

 

[moggridgeplumbing]

Sorry old school - 1inch 3/4" or 45mm in new money, with a nice 22mm hole for slight adjustment.

 

[macadonald]

Thanks guys,

Just the kind of response i wanted.

 

[CharteredEngineer]

I usually go for 50mm either side.

 

[martyndc88]

40mm i find is perfect, used to do 35mm but that was a struggle. but each to there own

 

[bookahandyman]

I add 45mm to each end as centres for pipe and come 8cm off wall for a double rad and 6cm for a single.

 

[macadonald]

Well that's interesting, people seem to range between 35 and 50 mm off the end of the radiator. Guess there are either a lot of skew pipes out there or valves vary?

 

[martyndc88]

Valves do vary slightly, most have short slumps of 15 on them and can be slightly adjusted but I found 35 wasnt enough

 

[gasman26]

I always use 40mm either side & fits perfect, but I suppose it depends which trv & lockshield you are using....

 

[namsag]

45MM each side When using plumbcentre bulldog valves/pts boss valves/terrier valves.
If the lockshield is a wasp valve then this distance would be less on one side