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8mm pipe to rad valves on a tight bend

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Discuss 8mm pipe to rad valves on a tight bend in the Plumbing Jobs | The Job-board area at Plumbers Forums

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andyplumber2009

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Hi All,
in my 1980 built house the rads are on a 15mm system reduced to 8mm into the valves by running the pipe behind the rad they down and returned into the valve. It is very neatly done and i have fitted a couple more rads and want to replicate the same finish BUT....
i cannot for the life of me get the 8mm to do a 180 degree bend with about a 30 or 40mm dia curve?
It acually looks like the kind of piece that is maybe machine bent and a bought from a merchant as on every rad they are perfect.
Help please on what i am missing.....
Andy
 
This
ef.jpg

This
comp.jpg

or this
bender.jpg
 
Yeah, i have tried the bender and it creases when i try i tight bend. The comp fittings are just to clumsy and the ef fitting woule work but i wondered how fitters 30 years ago managed the bend cleanly when i can't these days.
Thanks for the feedback
 
Thicker walled pipe 30 yrs ago less prone to creasing, but probably preformed bought off the shelf as you say
Can you use a machine bend 90 with an end feed 90?
 
My dad used to use springs that went over the pipe don't no if that would get you a better bend?
 
ozzy - We still use internal and external springs - (22mm hurts our backs !) we also use
full bore & microbore benders and swaging tools - 15/22 - wipe lead and make lead
snowboxes complete with motifs. We also have 'chain dogs'

maybe the part you want is at BES Birmingham CHK

ozzy said:
My dad used to use springs that went over the pipe don't no if that would get you a better bend?
Click to expand...
 
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They probably would do imperial sizes.
I can't remember what make mine is but rothenberg still sold them a few years back as one of the lads had a rothenberg one. The ratchet bender is a much better tool.
A brake pipe flaring tool might be what you are after for swedging the ends out.
 
tamz said:
They have been done on a bender
Click to expand...

Hell Tamz I would like to see that former, that is tight, doubt you could do that with today's tube, like you say looks like
a bender done that.
 
you can get valves with chrome m/f push fit bends to go in the bottom which give a nice finish for this situation
 
happyflyer said:
Hell Tamz I would like to see that former, that is tight, doubt you could do that with today's tube, like you say looks like
a bender done that.
Click to expand...

A wee touch with the blow lamp and you could still do it with a spring. It would take longer to clean the pipe up tho :wink:
 
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