Same old problem. Rising main to upstairs flat running through my
airing cuboard. Bits of blue pipe, bits of black, with couplers, all
hanging loose, unbracketed.
Management company's plumber says it's fine but it keeps leaking from
different joints.

Though the whole rising main running through the three flats should be
replaced it very likely won't be.

So my question is: if I cut out the whole run through my airing
cupoard leaving a stub coming up through the floor and one poking out
of the ceiling, then put a single length of pipe between the two
is there a better quality joining method, more effective than the
standard couplers to complete the job?
Maybe something resembling heavy duty heatshrink or the like?
--

Mike

On 29/03/2021 16:56, Mike Halmarack wrote:
Same old problem. Rising main to upstairs flat running through my
airing cuboard. Bits of blue pipe, bits of black, with couplers, all
hanging loose, unbracketed.
Management company's plumber says it's fine but it keeps leaking from
different joints.

Though the whole rising main running through the three flats should be
replaced it very likely won't be.

So my question is: if I cut out the whole run through my airing
cupoard leaving a stub coming up through the floor and one poking out
of the ceiling, then put a single length of pipe between the two
is there a better quality joining method, more effective than the
standard couplers to complete the job?
Maybe something resembling heavy duty heatshrink or the like?


You could try that but not reconnect the ends and then wait for
someone to come along and fix it. :-)

Remind us what you would be cutting - original (?imperial) copper,
black PVC or something else. I don't think you can easily join
black PVC to blue MDPE, especially with those nasty hand-tightened
compression fittings that are used on MDPE these days.

On Mon, 29 Mar 2021 17:04:07 +0100, Andrew
wrote:

On 29/03/2021 16:56, Mike Halmarack wrote:
Same old problem. Rising main to upstairs flat running through my
airing cuboard. Bits of blue pipe, bits of black, with couplers, all
hanging loose, unbracketed.
Management company's plumber says it's fine but it keeps leaking from
different joints.

Though the whole rising main running through the three flats should be
replaced it very likely won't be.

So my question is: if I cut out the whole run through my airing
cupoard leaving a stub coming up through the floor and one poking out
of the ceiling, then put a single length of pipe between the two
is there a better quality joining method, more effective than the
standard couplers to complete the job?
Maybe something resembling heavy duty heatshrink or the like?


You could try that but not reconnect the ends and then wait for
someone to come along and fix it. :-)

Remind us what you would be cutting - original (?imperial) copper,
black PVC or something else. I don't think you can easily join
black PVC to blue MDPE, especially with those nasty hand-tightened
compression fittings that are used on MDPE these days.

Sometimes I'm a bit excessive on the details so I have to try to keep
it brief. I was hoping that blue and black with couplers woud be
enough clues.
As it is, the two stubs would be black, so with black between, the
match might a better one than the current.
--

Mike

On 29/03/2021 17:40, Mike Halmarack wrote:
On Mon, 29 Mar 2021 17:04:07 +0100, Andrew
wrote:

On 29/03/2021 16:56, Mike Halmarack wrote:
Same old problem. Rising main to upstairs flat running through my
airing cuboard. Bits of blue pipe, bits of black, with couplers, all
hanging loose, unbracketed.
Management company's plumber says it's fine but it keeps leaking from
different joints.

Though the whole rising main running through the three flats should be
replaced it very likely won't be.

So my question is: if I cut out the whole run through my airing
cupoard leaving a stub coming up through the floor and one poking out
of the ceiling, then put a single length of pipe between the two
is there a better quality joining method, more effective than the
standard couplers to complete the job?
Maybe something resembling heavy duty heatshrink or the like?


You could try that but not reconnect the ends and then wait for
someone to come along and fix it. :-)

Remind us what you would be cutting - original (?imperial) copper,
black PVC or something else. I don't think you can easily join
black PVC to blue MDPE, especially with those nasty hand-tightened
compression fittings that are used on MDPE these days.

Sometimes I'm a bit excessive on the details so I have to try to keep
it brief. I was hoping that blue and black with couplers woud be
enough clues.
As it is, the two stubs would be black, so with black between, the
match might a better one than the current.


Assuming you can find some matching black polythene pipe,
then that might to the trick. The issue will still be the compression
connector used at each end of the 'new' bit'.

I've just crawled into the back of my corner kitchen unit where my
black water pipe comes in and joins to 15mm copper with a connector
that looks a bit like this one (but I don't know if there is an
insert inside the black plastic, and I am not going to undo it to
check :-(

https://plumbinbits.co.uk/product/15...er-with-liner/

Seems a lot for a connector, but it doesn't look like a standard
compression connector. Just needs a short length of 15mm copper.

On Mon, 29 Mar 2021 18:08:05 +0100, Andrew
wrote:

On 29/03/2021 17:40, Mike Halmarack wrote:
On Mon, 29 Mar 2021 17:04:07 +0100, Andrew
wrote:

On 29/03/2021 16:56, Mike Halmarack wrote:
Same old problem. Rising main to upstairs flat running through my
airing cuboard. Bits of blue pipe, bits of black, with couplers, all
hanging loose, unbracketed.
Management company's plumber says it's fine but it keeps leaking from
different joints.

Though the whole rising main running through the three flats should be
replaced it very likely won't be.

So my question is: if I cut out the whole run through my airing
cupoard leaving a stub coming up through the floor and one poking out
of the ceiling, then put a single length of pipe between the two
is there a better quality joining method, more effective than the
standard couplers to complete the job?
Maybe something resembling heavy duty heatshrink or the like?


You could try that but not reconnect the ends and then wait for
someone to come along and fix it. :-)

Remind us what you would be cutting - original (?imperial) copper,
black PVC or something else. I don't think you can easily join
black PVC to blue MDPE, especially with those nasty hand-tightened
compression fittings that are used on MDPE these days.

Sometimes I'm a bit excessive on the details so I have to try to keep
it brief. I was hoping that blue and black with couplers woud be
enough clues.
As it is, the two stubs would be black, so with black between, the
match might a better one than the current.


Assuming you can find some matching black polythene pipe,
then that might to the trick. The issue will still be the compression
connector used at each end of the 'new' bit'.

I've just crawled into the back of my corner kitchen unit where my
black water pipe comes in and joins to 15mm copper with a connector
that looks a bit like this one (but I don't know if there is an
insert inside the black plastic, and I am not going to undo it to
check :-(

https://plumbinbits.co.uk/product/15...er-with-liner/

Seems a lot for a connector, but it doesn't look like a standard
compression connector. Just needs a short length of 15mm copper.

That looks like an interesting possibility.
I'll see if I can incorporate that in the plan, such as it is.
--

Mike

So you have permission to cut the supply to all the flats fed by this while
you do a proper job then?I'd be very very wary in a rental situation.
Brian

--

This newsgroup posting comes to you directly from...
The Sofa of Brian Gaff...

Blind user, so no pictures please
Note this Signature is meaningless.!
"Mike Halmarack" wrote in message
...
On Mon, 29 Mar 2021 17:04:07 +0100, Andrew
wrote:

On 29/03/2021 16:56, Mike Halmarack wrote:
Same old problem. Rising main to upstairs flat running through my
airing cuboard. Bits of blue pipe, bits of black, with couplers, all
hanging loose, unbracketed.
Management company's plumber says it's fine but it keeps leaking from
different joints.

Though the whole rising main running through the three flats should be
replaced it very likely won't be.

So my question is: if I cut out the whole run through my airing
cupoard leaving a stub coming up through the floor and one poking out
of the ceiling, then put a single length of pipe between the two
is there a better quality joining method, more effective than the
standard couplers to complete the job?
Maybe something resembling heavy duty heatshrink or the like?


You could try that but not reconnect the ends and then wait for
someone to come along and fix it. :-)

Remind us what you would be cutting - original (?imperial) copper,
black PVC or something else. I don't think you can easily join
black PVC to blue MDPE, especially with those nasty hand-tightened
compression fittings that are used on MDPE these days.

Sometimes I'm a bit excessive on the details so I have to try to keep
it brief. I was hoping that blue and black with couplers woud be
enough clues.
As it is, the two stubs would be black, so with black between, the
match might a better one than the current.
--

Mike

In message , Mike Halmarack
writes
On Mon, 29 Mar 2021 17:04:07 +0100, Andrew
wrote:

On 29/03/2021 16:56, Mike Halmarack wrote:
Same old problem. Rising main to upstairs flat running through my
airing cuboard. Bits of blue pipe, bits of black, with couplers, all
hanging loose, unbracketed.
Management company's plumber says it's fine but it keeps leaking from
different joints.

Though the whole rising main running through the three flats should be
replaced it very likely won't be.

So my question is: if I cut out the whole run through my airing
cupoard leaving a stub coming up through the floor and one poking out
of the ceiling, then put a single length of pipe between the two
is there a better quality joining method, more effective than the
standard couplers to complete the job?
Maybe something resembling heavy duty heatshrink or the like?


You could try that but not reconnect the ends and then wait for
someone to come along and fix it. :-)

Remind us what you would be cutting - original (?imperial) copper,
black PVC or something else. I don't think you can easily join
black PVC to blue MDPE, especially with those nasty hand-tightened
compression fittings that are used on MDPE these days.

Sometimes I'm a bit excessive on the details so I have to try to keep
it brief. I was hoping that blue and black with couplers woud be
enough clues.
As it is, the two stubs would be black, so with black between, the
match might a better one than the current.

Have a look at *Johnson couplings*. The *black* pipe may be 1/2"
alkathene.

--
Tim Lamb

On 29/03/2021 21:16, Tim Lamb wrote:
In message , Mike Halmarack
writes
On Mon, 29 Mar 2021 17:04:07 +0100, Andrew
wrote:

On 29/03/2021 16:56, Mike Halmarack wrote:
Same old problem. Rising main to upstairs flat running through my
airing cuboard. Bits of blue pipe, bits of black, with couplers, all
hanging loose, unbracketed.
Management company's plumber says it's fine but it keeps leaking from
different joints.

Though the whole rising main running through the three flats should be
replaced it very likely won't be.

So my question is: if I cut out the whole run through my airing
cupoard leaving a stub coming up through the floor and one poking out
of the ceiling, then put a single length of pipe between the two
is there a better quality joining method, more effective than the
standard couplers to complete the job?
Maybe something resembling heavy duty heatshrink or the like?


You could try that but not reconnect the ends and then wait for
someone to come along and fix it. :-)

Remind us what you would be cutting - original (?imperial) copper,
black PVC or something else. I don't think you can easily join
black PVC to blue MDPE, especially with those nasty hand-tightened
compression fittings that are used on MDPE these days.

Sometimes I'm a bit excessive on the details so I have to try to keep
it brief. I was hoping that blue and black with couplers woud be
enough clues.
As it is, the two stubs would be black, so with black between, the
match might a better one than the current.

Have a look at *Johnson couplings*. The *black* pipe may be 1/2" alkathene.


rising main is at least 22m and more commonly bigger

MDPE




--
In todays liberal progressive conflict-free education system, everyone
gets full Marx.

In message , The Natural Philosopher
writes
On 29/03/2021 21:16, Tim Lamb wrote:
In message , Mike
Halmarack writes
On Mon, 29 Mar 2021 17:04:07 +0100, Andrew
wrote:

On 29/03/2021 16:56, Mike Halmarack wrote:
Same old problem. Rising main to upstairs flat running through my
airing cuboard. Bits of blue pipe, bits of black, with couplers, all
hanging loose, unbracketed.
Management company's plumber says it's fine but it keeps leaking from
different joints.

Though the whole rising main running through the three flats should be
replaced it very likely won't be.

So my question is: if I cut out the whole run through my airing
cupoard leaving a stub coming up through the floor and one poking out
of the ceiling, then put a single length of pipe between the two
is there a better quality joining method, more effective than the
standard couplers to complete the job?
Maybe something resembling heavy duty heatshrink or the like?


You could try that but not reconnect the ends and then wait for
someone to come along and fix it. :-)

Remind us what you would be cutting - original (?imperial) copper,
black PVC or something else. I don't think you can easily join
black PVC to blue MDPE, especially with those nasty hand-tightened
compression fittings that are used on MDPE these days.

Sometimes I'm a bit excessive on the details so I have to try to keep
it brief. I was hoping that blue and black with couplers woud be
enough clues.
As it is, the two stubs would be black, so with black between, the
match might a better one than the current.
Have a look at *Johnson couplings*. The *black* pipe may be 1/2"
alkathene.


rising main is at least 22m and more commonly bigger

MDPE

Black of an unknown age. 1960's mains piping commonly 1/2", 3/4" 1.0"
bores.



--
Tim Lamb

On Mon, 29 Mar 2021 20:51:40 +0100, "Brian Gaff \(Sofa\)"
wrote:

So you have permission to cut the supply to all the flats fed by this while
you do a proper job then?I'd be very very wary in a rental situation.
Brian

No, I don't have permission to do this but I am considerate enough to
apply for it before doing such a job.

I don't think my flat would be considered a rented property but I
wouldn't want to complicate the issue by getting into that unless
absolutely necessary.
--

Mike

On Tue, 30 Mar 2021 08:54:41 +0100, Tim Lamb
wrote:

In message , The Natural Philosopher
writes
On 29/03/2021 21:16, Tim Lamb wrote:
In message , Mike
Halmarack writes
On Mon, 29 Mar 2021 17:04:07 +0100, Andrew
wrote:

On 29/03/2021 16:56, Mike Halmarack wrote:
Same old problem. Rising main to upstairs flat running through my
airing cuboard. Bits of blue pipe, bits of black, with couplers, all
hanging loose, unbracketed.
Management company's plumber says it's fine but it keeps leaking from
different joints.

Though the whole rising main running through the three flats should be
replaced it very likely won't be.

So my question is: if I cut out the whole run through my airing
cupoard leaving a stub coming up through the floor and one poking out
of the ceiling, then put a single length of pipe between the two
is there a better quality joining method, more effective than the
standard couplers to complete the job?
Maybe something resembling heavy duty heatshrink or the like?


You could try that but not reconnect the ends and then wait for
someone to come along and fix it. :-)

Remind us what you would be cutting - original (?imperial) copper,
black PVC or something else. I don't think you can easily join
black PVC to blue MDPE, especially with those nasty hand-tightened
compression fittings that are used on MDPE these days.

Sometimes I'm a bit excessive on the details so I have to try to keep
it brief. I was hoping that blue and black with couplers woud be
enough clues.
As it is, the two stubs would be black, so with black between, the
match might a better one than the current.
Have a look at *Johnson couplings*. The *black* pipe may be 1/2"
alkathene.


rising main is at least 22m and more commonly bigger

MDPE

Black of an unknown age. 1960's mains piping commonly 1/2", 3/4" 1.0"
bores.

I must get that vernier gauge from Lidl. Hope they've still got one.
--

Mike

On Mon, 29 Mar 2021 21:16:51 +0100, Tim Lamb
wrote:

Johnson couplings

Great quality piece of kit if the price is anything to go by.
--

Mike

On Tue, 30 Mar 2021 09:49:37 +0100, Mike Halmarack
wrote:

On Mon, 29 Mar 2021 21:16:51 +0100, Tim Lamb
wrote:

Johnson couplings

Great quality piece of kit if the price is anything to go by.

I think that's what the guy used when the incoming main gave way into
ours years ago.

It was in 3/4" galv steel 'gas barrel' and had rusted so thin, using
the stopcock in the back garden was enough to cause it to fracture (on
the incoming side) and so instant pond. ;-(

He turned it off in the road, dug down to the pipe and fitted a double
ended 'coupler' over the damaged area (still pretty rusty and gnarly),
tightened it up and that was job done (to my surprise).

Cheers, T i m

On Monday, March 29, 2021 at 5:04:12 PM UTC+1, Andrew wrote:
On 29/03/2021 16:56, Mike Halmarack wrote:
Same old problem. Rising main to upstairs flat running through my
airing cuboard. Bits of blue pipe, bits of black, with couplers, all
hanging loose, unbracketed.
Management company's plumber says it's fine but it keeps leaking from
different joints.

Though the whole rising main running through the three flats should be
replaced it very likely won't be.

So my question is: if I cut out the whole run through my airing
cupoard leaving a stub coming up through the floor and one poking out
of the ceiling, then put a single length of pipe between the two
is there a better quality joining method, more effective than the
standard couplers to complete the job?
Maybe something resembling heavy duty heatshrink or the like?

You could try that but not reconnect the ends and then wait for
someone to come along and fix it. :-)

Remind us what you would be cutting - original (?imperial) copper,
black PVC or something else. I don't think you can easily join
black PVC to blue MDPE, especially with those nasty hand-tightened
compression fittings that are used on MDPE these days.


Farm shops used to sell couplings sepcificall for that purpose.

Jonathan

On Tue, 30 Mar 2021 09:49:37 +0100, Mike Halmarack wrote:

On Mon, 29 Mar 2021 21:16:51 +0100, Tim Lamb
wrote:

Johnson couplings

Great quality piece of kit if the price is anything to go by.

First bit of plumbing I ever did was with one of those. Connected a lead
rising main to copper.

--
My posts are my copyright and if @diy_forums or Home Owners' Hub
wish to copy them they can pay me £1 a message.
Use the BIG mirror service in the UK: http://www.mirrorservice.org
*lightning surge protection* - a w_tom conductor

In message , Mike Halmarack
writes
On Tue, 30 Mar 2021 08:54:41 +0100, Tim Lamb
wrote:

In message , The Natural Philosopher
writes
On 29/03/2021 21:16, Tim Lamb wrote:
In message , Mike
Halmarack writes
On Mon, 29 Mar 2021 17:04:07 +0100, Andrew
wrote:

On 29/03/2021 16:56, Mike Halmarack wrote:
Same old problem. Rising main to upstairs flat running through my
airing cuboard. Bits of blue pipe, bits of black, with couplers, all
hanging loose, unbracketed.
Management company's plumber says it's fine but it keeps leaking from
different joints.

Though the whole rising main running through the three flats should be
replaced it very likely won't be.

So my question is: if I cut out the whole run through my airing
cupoard leaving a stub coming up through the floor and one poking out
of the ceiling, then put a single length of pipe between the two
is there a better quality joining method, more effective than the
standard couplers to complete the job?
Maybe something resembling heavy duty heatshrink or the like?


You could try that but not reconnect the ends and then wait for
someone to come along and fix it. :-)

Remind us what you would be cutting - original (?imperial) copper,
black PVC or something else. I don't think you can easily join
black PVC to blue MDPE, especially with those nasty hand-tightened
compression fittings that are used on MDPE these days.

Sometimes I'm a bit excessive on the details so I have to try to keep
it brief. I was hoping that blue and black with couplers woud be
enough clues.
As it is, the two stubs would be black, so with black between, the
match might a better one than the current.
Have a look at *Johnson couplings*. The *black* pipe may be 1/2"
alkathene.


rising main is at least 22m and more commonly bigger

MDPE

Black of an unknown age. 1960's mains piping commonly 1/2", 3/4" 1.0"
bores.

I must get that vernier gauge from Lidl. Hope they've still got one.

Wind a bit of string round ten times and work it out from the length?:-)

--
Tim Lamb

On 30/03/2021 08:54, Tim Lamb wrote:
In message , The Natural Philosopher
writes
On 29/03/2021 21:16, Tim Lamb wrote:
In message , Mike
HalmarackÂ* writes
On Mon, 29 Mar 2021 17:04:07 +0100, Andrew
wrote:

On 29/03/2021 16:56, Mike Halmarack wrote:
Same old problem. Rising main to upstairs flat running through my
airing cuboard. Bits of blue pipe, bits of black, with couplers, all
hanging loose, unbracketed.
Management company's plumber says it's fine but it keeps leaking from
different joints.

Though the whole rising main running through the three flats
should be
replaced it very likely won't be.

So my question is: if I cut out the whole run through my airing
cupoard leaving a stub coming up through the floor and one poking out
of the ceiling, then put a single length of pipe between the two
is there a better quality joining method, more effective than the
standard couplers to complete the job?
Maybe something resembling heavy duty heatshrink or the like?


You could try that but not reconnect the ends and then wait for
someone to come along and fix it. :-)

Remind us what you would be cutting - original (?imperial) copper,
black PVC or something else. I don't think you can easily join
black PVC to blue MDPE, especially with those nasty hand-tightened
compression fittings that are used on MDPE these days.

Sometimes I'm a bit excessive on the details so I have to try to keep
it brief. I was hoping that blue and black with couplers woud be
enough clues.
As it is, the two stubs would be black, so with black between, the
match might a better one than the current.
Â*Have a look at *Johnson couplings*. The *black* pipe may be 1/2"
alkathene.


rising main is at least 22m and more commonly bigger

MDPE

Black of an unknown age. 1960's mains piping commonly 1/2", 3/4" 1.0"
bores.

1/2" bore is completely useless. Can't even supply a single tap
properly. Wont be used to supply a block of flats

Even 3/4" is marginal for a single household. 25mm MDPE is the standard
today and I would expect whatever the OP has to be in dire need ofr
ripping out and replacing with simply that...








--
"What do you think about Gay Marriage?"
"I don't."
"Don't what?"
"Think about Gay Marriage."

On 30/03/2021 09:44, Mike Halmarack wrote:
On Tue, 30 Mar 2021 08:54:41 +0100, Tim Lamb
wrote:

In message , The Natural Philosopher
writes
On 29/03/2021 21:16, Tim Lamb wrote:
In message , Mike
Halmarack writes
On Mon, 29 Mar 2021 17:04:07 +0100, Andrew
wrote:

On 29/03/2021 16:56, Mike Halmarack wrote:
Same old problem. Rising main to upstairs flat running through my
airing cuboard. Bits of blue pipe, bits of black, with couplers, all
hanging loose, unbracketed.
Management company's plumber says it's fine but it keeps leaking from
different joints.

Though the whole rising main running through the three flats should be
replaced it very likely won't be.

So my question is: if I cut out the whole run through my airing
cupoard leaving a stub coming up through the floor and one poking out
of the ceiling, then put a single length of pipe between the two
is there a better quality joining method, more effective than the
standard couplers to complete the job?
Maybe something resembling heavy duty heatshrink or the like?


You could try that but not reconnect the ends and then wait for
someone to come along and fix it. :-)

Remind us what you would be cutting - original (?imperial) copper,
black PVC or something else. I don't think you can easily join
black PVC to blue MDPE, especially with those nasty hand-tightened
compression fittings that are used on MDPE these days.

Sometimes I'm a bit excessive on the details so I have to try to keep
it brief. I was hoping that blue and black with couplers woud be
enough clues.
As it is, the two stubs would be black, so with black between, the
match might a better one than the current.
Have a look at *Johnson couplings*. The *black* pipe may be 1/2"
alkathene.


rising main is at least 22m and more commonly bigger

MDPE

Black of an unknown age. 1960's mains piping commonly 1/2", 3/4" 1.0"
bores.

I must get that vernier gauge from Lidl. Hope they've still got one.

Well, yes, but to this level of accuracy, what's wrong with e.g. a screw
clamp applied, then removed and measured with a tape measure?

IIRC most rising mains today are 25mm blue MDPE - and the couplers for
that work very well.



--
Renewable energy: Expensive solutions that don't work to a problem that
doesn't exist instituted by self legalising protection rackets that
don't protect, masquerading as public servants who don't serve the public.

On 30/03/2021 12:32, The Natural Philosopher wrote:
On 30/03/2021 08:54, Tim Lamb wrote:
In message , The Natural Philosopher
writes
On 29/03/2021 21:16, Tim Lamb wrote:
In message , Mike
HalmarackÂ* writes
On Mon, 29 Mar 2021 17:04:07 +0100, Andrew
wrote:

On 29/03/2021 16:56, Mike Halmarack wrote:
Same old problem. Rising main to upstairs flat running through my
airing cuboard. Bits of blue pipe, bits of black, with couplers, all
hanging loose, unbracketed.
Management company's plumber says it's fine but it keeps leaking
from
different joints.

Though the whole rising main running through the three flats
should be
replaced it very likely won't be.

So my question is: if I cut out the whole run through my airing
cupoard leaving a stub coming up through the floor and one poking
out
of the ceiling, then put a single length of pipe between the two
is there a better quality joining method, more effective than the
standard couplers to complete the job?
Maybe something resembling heavy duty heatshrink or the like?


You could try that but not reconnect the ends and then wait for
someone to come along and fix it. :-)

Remind us what you would be cutting - original (?imperial) copper,
black PVC or something else. I don't think you can easily join
black PVC to blue MDPE, especially with those nasty hand-tightened
compression fittings that are used on MDPE these days.

Sometimes I'm a bit excessive on the details so I have to try to keep
it brief. I was hoping that blue and black with couplers woud be
enough clues.
As it is, the two stubs would be black, so with black between, the
match might a better one than the current.
Â*Have a look at *Johnson couplings*. The *black* pipe may be 1/2"
alkathene.


rising main is at least 22m and more commonly bigger

MDPE

Black of an unknown age. 1960's mains piping commonly 1/2", 3/4" 1.0"
bores.

1/2" bore is completely useless. Can't even supply a single tap
properly. Wont be used to supply a block of flats

Even 3/4" is marginal for a single household. 25mm MDPE is the standard
today and I would expect whatever the OP has to be in dire need ofr
ripping out and replacing with simply that...


plenty of old houses still have 1/2" internal diameter lead supply pipes
joined to 15mm copper - even where converted to flats - without
practical problems where water pressure is maintained.



--
Robin
reply-to address is (intended to be) valid

On 30/03/2021 12:34, The Natural Philosopher wrote:
On 30/03/2021 09:44, Mike Halmarack wrote:
On Tue, 30 Mar 2021 08:54:41 +0100, Tim Lamb
wrote:

In message , The Natural Philosopher
writes
On 29/03/2021 21:16, Tim Lamb wrote:
In message , Mike
HalmarackÂ* writes
On Mon, 29 Mar 2021 17:04:07 +0100, Andrew
wrote:

On 29/03/2021 16:56, Mike Halmarack wrote:
Same old problem. Rising main to upstairs flat running through my
airing cuboard. Bits of blue pipe, bits of black, with couplers,
all
hanging loose, unbracketed.
Management company's plumber says it's fine but it keeps leaking
from
different joints.

Though the whole rising main running through the three flats
should be
replaced it very likely won't be.

So my question is: if I cut out the whole run through my airing
cupoard leaving a stub coming up through the floor and one
poking out
of the ceiling, then put a single length of pipe between the two
is there a better quality joining method, more effective than the
standard couplers to complete the job?
Maybe something resembling heavy duty heatshrink or the like?


You could try that but not reconnect the ends and then wait for
someone to come along and fix it. :-)

Remind us what you would be cutting - original (?imperial) copper,
black PVC or something else. I don't think you can easily join
black PVC to blue MDPE, especially with those nasty hand-tightened
compression fittings that are used on MDPE these days.

Sometimes I'm a bit excessive on the details so I have to try to keep
it brief. I was hoping that blue and black with couplers woud be
enough clues.
As it is, the two stubs would be black, so with black between, the
match might a better one than the current.
Â* Have a look at *Johnson couplings*. The *black* pipe may be 1/2"
alkathene.


rising main is at least 22m and more commonly bigger

MDPE

Black of an unknown age. 1960's mains piping commonly 1/2", 3/4" 1.0"
bores.

I must get that vernier gauge from Lidl. Hope they've still got one.

Well, yes, but to this level of accuracy, what's wrong with e.g. a screw
clamp applied, then removed and measured with a tape measure?

IIRC most rising mains today are 25mm blue MDPE - and the couplers for
that work very well.




He is living in a block of flats built in the 1960's. That stuff
didn't exist then. Keep up.

On 30/03/2021 13:14, Robin wrote:
On 30/03/2021 12:32, The Natural Philosopher wrote:
On 30/03/2021 08:54, Tim Lamb wrote:
In message , The Natural Philosopher
writes
On 29/03/2021 21:16, Tim Lamb wrote:
In message , Mike
HalmarackÂ* writes
On Mon, 29 Mar 2021 17:04:07 +0100, Andrew
wrote:

On 29/03/2021 16:56, Mike Halmarack wrote:
Same old problem. Rising main to upstairs flat running through my
airing cuboard. Bits of blue pipe, bits of black, with couplers,
all
hanging loose, unbracketed.
Management company's plumber says it's fine but it keeps leaking
from
different joints.

Though the whole rising main running through the three flats
should be
replaced it very likely won't be.

So my question is: if I cut out the whole run through my airing
cupoard leaving a stub coming up through the floor and one
poking out
of the ceiling, then put a single length of pipe between the two
is there a better quality joining method, more effective than the
standard couplers to complete the job?
Maybe something resembling heavy duty heatshrink or the like?


You could try that but not reconnect the ends and then wait for
someone to come along and fix it. :-)

Remind us what you would be cutting - original (?imperial) copper,
black PVC or something else. I don't think you can easily join
black PVC to blue MDPE, especially with those nasty hand-tightened
compression fittings that are used on MDPE these days.

Sometimes I'm a bit excessive on the details so I have to try to keep
it brief. I was hoping that blue and black with couplers woud be
enough clues.
As it is, the two stubs would be black, so with black between, the
match might a better one than the current.
Â*Have a look at *Johnson couplings*. The *black* pipe may be 1/2"
alkathene.


rising main is at least 22m and more commonly bigger

MDPE

Black of an unknown age. 1960's mains piping commonly 1/2", 3/4" 1.0"
bores.

1/2" bore is completely useless. Can't even supply a single tap
properly. Wont be used to supply a block of flats

Even 3/4" is marginal for a single household. 25mm MDPE is the
standard today and I would expect whatever the OP has to be in dire
need ofr ripping out and replacing with simply that...


plenty of old houses still have 1/2" internal diameter lead supply pipes
joined to 15mm copper - even where converted to flats - without
practical problems where water pressure is maintained.




My 1976 house has black 'plastic' pipework connected to 15mm
copper under the sink. That's how they did it back then.

On 30/03/2021 11:30, Jonathan wrote:
On Monday, March 29, 2021 at 5:04:12 PM UTC+1, Andrew wrote:
On 29/03/2021 16:56, Mike Halmarack wrote:
Same old problem. Rising main to upstairs flat running through my
airing cuboard. Bits of blue pipe, bits of black, with couplers, all
hanging loose, unbracketed.
Management company's plumber says it's fine but it keeps leaking from
different joints.

Though the whole rising main running through the three flats should be
replaced it very likely won't be.

So my question is: if I cut out the whole run through my airing
cupoard leaving a stub coming up through the floor and one poking out
of the ceiling, then put a single length of pipe between the two
is there a better quality joining method, more effective than the
standard couplers to complete the job?
Maybe something resembling heavy duty heatshrink or the like?

You could try that but not reconnect the ends and then wait for
someone to come along and fix it. :-)

Remind us what you would be cutting - original (?imperial) copper,
black PVC or something else. I don't think you can easily join
black PVC to blue MDPE, especially with those nasty hand-tightened
compression fittings that are used on MDPE these days.


Farm shops used to sell couplings sepcificall for that purpose.

Jonathan

You get a mixture of blue and black on farms, all sorts of stuff in my
local Mole Valley. They sort of seem expensive especially if you have to
buy a collection of bits, but once you realise they let you do a
permanent job in minutes (up a ladder in a barn or in a muddy field)
with rudimentary tools you realise they are good value after all.

In message , Andrew
writes
On 30/03/2021 12:34, The Natural Philosopher wrote:
On 30/03/2021 09:44, Mike Halmarack wrote:
On Tue, 30 Mar 2021 08:54:41 +0100, Tim Lamb
wrote:

In message , The Natural Philosopher
writes
On 29/03/2021 21:16, Tim Lamb wrote:
In message , Mike
Halmarack* writes
On Mon, 29 Mar 2021 17:04:07 +0100, Andrew
wrote:

On 29/03/2021 16:56, Mike Halmarack wrote:
Same old problem. Rising main to upstairs flat running through my
airing cuboard. Bits of blue pipe, bits of black, with
couplers, all
hanging loose, unbracketed.
Management company's plumber says it's fine but it keeps
leaking from
different joints.

Though the whole rising main running through the three flats
should be
replaced it very likely won't be.

So my question is: if I cut out the whole run through my airing
cupoard leaving a stub coming up through the floor and one
poking out
of the ceiling, then put a single length of pipe between the two
is there a better quality joining method, more effective than the
standard couplers to complete the job?
Maybe something resembling heavy duty heatshrink or the like?


You could try that but not reconnect the ends and then wait for
someone to come along and fix it. :-)

Remind us what you would be cutting - original (?imperial) copper,
black PVC or something else. I don't think you can easily join
black PVC to blue MDPE, especially with those nasty hand-tightened
compression fittings that are used on MDPE these days.

Sometimes I'm a bit excessive on the details so I have to try to keep
it brief. I was hoping that blue and black with couplers woud be
enough clues.
As it is, the two stubs would be black, so with black between, the
match might a better one than the current.
* Have a look at *Johnson couplings*. The *black* pipe may be 1/2"
alkathene.


rising main is at least 22m and more commonly bigger

MDPE

Black of an unknown age. 1960's mains piping commonly 1/2", 3/4" 1.0"
bores.

I must get that vernier gauge from Lidl. Hope they've still got one.

Well, yes, but to this level of accuracy, what's wrong with e.g. a
screw clamp applied, then removed and measured with a tape measure?
IIRC most rising mains today are 25mm blue MDPE - and the couplers
for that work very well.


He is living in a block of flats built in the 1960's. That stuff
didn't exist then. Keep up.

Has he said that? I guessed '60's because I knew black imperial sized
alkathene was in use then.


--
Tim Lamb

On Wed, 31 Mar 2021 13:32:28 +0100, newshound
wrote:

On 30/03/2021 11:30, Jonathan wrote:
On Monday, March 29, 2021 at 5:04:12 PM UTC+1, Andrew wrote:
On 29/03/2021 16:56, Mike Halmarack wrote:
Same old problem. Rising main to upstairs flat running through my
airing cuboard. Bits of blue pipe, bits of black, with couplers, all
hanging loose, unbracketed.
Management company's plumber says it's fine but it keeps leaking from
different joints.

Though the whole rising main running through the three flats should be
replaced it very likely won't be.

So my question is: if I cut out the whole run through my airing
cupoard leaving a stub coming up through the floor and one poking out
of the ceiling, then put a single length of pipe between the two
is there a better quality joining method, more effective than the
standard couplers to complete the job?
Maybe something resembling heavy duty heatshrink or the like?

You could try that but not reconnect the ends and then wait for
someone to come along and fix it. :-)

Remind us what you would be cutting - original (?imperial) copper,
black PVC or something else. I don't think you can easily join
black PVC to blue MDPE, especially with those nasty hand-tightened
compression fittings that are used on MDPE these days.


Farm shops used to sell couplings sepcificall for that purpose.

Jonathan

You get a mixture of blue and black on farms, all sorts of stuff in my
local Mole Valley. They sort of seem expensive especially if you have to
buy a collection of bits, but once you realise they let you do a
permanent job in minutes (up a ladder in a barn or in a muddy field)
with rudimentary tools you realise they are good value after all.

There's quite a lot of mixed blue and black when you look up from
under Sandown Pier and it doesnt seem to be leaking. Wish I could say
the same about my airing cupboard.
--

Mike

On Wed, 31 Mar 2021 14:08:29 +0100, Tim Lamb
wrote:

In message , Andrew
writes
On 30/03/2021 12:34, The Natural Philosopher wrote:
On 30/03/2021 09:44, Mike Halmarack wrote:
On Tue, 30 Mar 2021 08:54:41 +0100, Tim Lamb
wrote:

In message , The Natural Philosopher
writes
On 29/03/2021 21:16, Tim Lamb wrote:
In message , Mike
Halmarack* writes
On Mon, 29 Mar 2021 17:04:07 +0100, Andrew
wrote:

On 29/03/2021 16:56, Mike Halmarack wrote:
Same old problem. Rising main to upstairs flat running through my
airing cuboard. Bits of blue pipe, bits of black, with
couplers, all
hanging loose, unbracketed.
Management company's plumber says it's fine but it keeps
leaking from
different joints.

Though the whole rising main running through the three flats
should be
replaced it very likely won't be.

So my question is: if I cut out the whole run through my airing
cupoard leaving a stub coming up through the floor and one
poking out
of the ceiling, then put a single length of pipe between the two
is there a better quality joining method, more effective than the
standard couplers to complete the job?
Maybe something resembling heavy duty heatshrink or the like?


You could try that but not reconnect the ends and then wait for
someone to come along and fix it. :-)

Remind us what you would be cutting - original (?imperial) copper,
black PVC or something else. I don't think you can easily join
black PVC to blue MDPE, especially with those nasty hand-tightened
compression fittings that are used on MDPE these days.

Sometimes I'm a bit excessive on the details so I have to try to keep
it brief. I was hoping that blue and black with couplers woud be
enough clues.
As it is, the two stubs would be black, so with black between, the
match might a better one than the current.
* Have a look at *Johnson couplings*. The *black* pipe may be 1/2"
alkathene.


rising main is at least 22m and more commonly bigger

MDPE

Black of an unknown age. 1960's mains piping commonly 1/2", 3/4" 1.0"
bores.

I must get that vernier gauge from Lidl. Hope they've still got one.

Well, yes, but to this level of accuracy, what's wrong with e.g. a
screw clamp applied, then removed and measured with a tape measure?
IIRC most rising mains today are 25mm blue MDPE - and the couplers
for that work very well.


He is living in a block of flats built in the 1960's. That stuff
didn't exist then. Keep up.

Has he said that? I guessed '60's because I knew black imperial sized
alkathene was in use then.

Early 70's really, if that would make much difference.
--

Mike

On 31/03/2021 16:45, Mike Halmarack wrote:
On Wed, 31 Mar 2021 13:32:28 +0100, newshound
wrote:

On 30/03/2021 11:30, Jonathan wrote:
On Monday, March 29, 2021 at 5:04:12 PM UTC+1, Andrew wrote:
On 29/03/2021 16:56, Mike Halmarack wrote:
Same old problem. Rising main to upstairs flat running through my
airing cuboard. Bits of blue pipe, bits of black, with couplers, all
hanging loose, unbracketed.
Management company's plumber says it's fine but it keeps leaking from
different joints.

Though the whole rising main running through the three flats should be
replaced it very likely won't be.

So my question is: if I cut out the whole run through my airing
cupoard leaving a stub coming up through the floor and one poking out
of the ceiling, then put a single length of pipe between the two
is there a better quality joining method, more effective than the
standard couplers to complete the job?
Maybe something resembling heavy duty heatshrink or the like?

You could try that but not reconnect the ends and then wait for
someone to come along and fix it. :-)

Remind us what you would be cutting - original (?imperial) copper,
black PVC or something else. I don't think you can easily join
black PVC to blue MDPE, especially with those nasty hand-tightened
compression fittings that are used on MDPE these days.


Farm shops used to sell couplings sepcificall for that purpose.

Jonathan

You get a mixture of blue and black on farms, all sorts of stuff in my
local Mole Valley. They sort of seem expensive especially if you have to
buy a collection of bits, but once you realise they let you do a
permanent job in minutes (up a ladder in a barn or in a muddy field)
with rudimentary tools you realise they are good value after all.

There's quite a lot of mixed blue and black when you look up from
under Sandown Pier and it doesnt seem to be leaking. Wish I could say
the same about my airing cupboard.


I am beginning to wonder if a simple lack of inserts inside the
ends of the black stuff is the problem ?. You would have to dismantle
it to prove one way or the other though.

On 31/03/2021 13:32, newshound wrote:
On 30/03/2021 11:30, Jonathan wrote:
On Monday, March 29, 2021 at 5:04:12 PM UTC+1, Andrew wrote:
On 29/03/2021 16:56, Mike Halmarack wrote:
Same old problem. Rising main to upstairs flat running through my
airing cuboard. Bits of blue pipe, bits of black, with couplers, all
hanging loose, unbracketed.
Management company's plumber says it's fine but it keeps leaking from
different joints.

Though the whole rising main running through the three flats should be
replaced it very likely won't be.

So my question is: if I cut out the whole run through my airing
cupoard leaving a stub coming up through the floor and one poking out
of the ceiling, then put a single length of pipe between the two
is there a better quality joining method, more effective than the
standard couplers to complete the job?
Maybe something resembling heavy duty heatshrink or the like?

You could try that but not reconnect the ends and then wait for
someone to come along and fix it. :-)

Remind us what you would be cutting - original (?imperial) copper,
black PVC or something else. I don't think you can easily join
black PVC to blue MDPE, especially with those nasty hand-tightened
compression fittings that are used on MDPE these days.


Farm shops used to sell couplings sepcificall for that purpose.

Jonathan

You get a mixture of blue and black on farms, all sorts of stuff in my
local Mole Valley. They sort of seem expensive especially if you have to
buy a collection of bits, but once you realise they let you do a
permanent job in minutes (up a ladder in a barn or in a muddy field)
with rudimentary tools you realise they are good value after all.
Isnt the Black version the same as the Blue but with a UV inhibitor added.
I used to use the Black where exposed to sunlight and the Blue were
buried as it was cheaper in the 1990's.

On Wed, 31 Mar 2021 17:13:16 +0100, Andrew
wrote:

On 31/03/2021 16:45, Mike Halmarack wrote:
On Wed, 31 Mar 2021 13:32:28 +0100, newshound
wrote:

On 30/03/2021 11:30, Jonathan wrote:
On Monday, March 29, 2021 at 5:04:12 PM UTC+1, Andrew wrote:
On 29/03/2021 16:56, Mike Halmarack wrote:
Same old problem. Rising main to upstairs flat running through my
airing cuboard. Bits of blue pipe, bits of black, with couplers, all
hanging loose, unbracketed.
Management company's plumber says it's fine but it keeps leaking from
different joints.

Though the whole rising main running through the three flats should be
replaced it very likely won't be.

So my question is: if I cut out the whole run through my airing
cupoard leaving a stub coming up through the floor and one poking out
of the ceiling, then put a single length of pipe between the two
is there a better quality joining method, more effective than the
standard couplers to complete the job?
Maybe something resembling heavy duty heatshrink or the like?

You could try that but not reconnect the ends and then wait for
someone to come along and fix it. :-)

Remind us what you would be cutting - original (?imperial) copper,
black PVC or something else. I don't think you can easily join
black PVC to blue MDPE, especially with those nasty hand-tightened
compression fittings that are used on MDPE these days.


Farm shops used to sell couplings sepcificall for that purpose.

Jonathan

You get a mixture of blue and black on farms, all sorts of stuff in my
local Mole Valley. They sort of seem expensive especially if you have to
buy a collection of bits, but once you realise they let you do a
permanent job in minutes (up a ladder in a barn or in a muddy field)
with rudimentary tools you realise they are good value after all.

There's quite a lot of mixed blue and black when you look up from
under Sandown Pier and it doesnt seem to be leaking. Wish I could say
the same about my airing cupboard.


I am beginning to wonder if a simple lack of inserts inside the
ends of the black stuff is the problem ?. You would have to dismantle
it to prove one way or the other though.

After much haranguing, the management company plumber came around
yesterday with a handful of "new style, super quality" connectors and
lengths of blue pipe. He converted the black and blue cocktail of
pipework to all blue.

I hope that's cured the leakage problem but I must say that there are
now so many connectors that the rising main pipework looks like a
string of rosary beads.
--

Mike

On Thu, 01 Apr 2021 17:13:35 +0100, Mike Halmarack
wrote:

snip

I hope that's cured the leakage problem but I must say that there are
now so many connectors that the rising main pipework looks like a
string of rosary beads.

Hehe!

Cheers, T i m