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Old November 8th 10, 02:36 PM posted to uk.d-i-y
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Posts: 2,613
Default fun with 38mm od pipe

38mm (1.5 inch) outside diameter pipe is a pipe size that you come
across when dealing with flushpipes. Is it used by anything else ??
And cistern outlets usually have a compression fitting for this size
of pipe, and the flushcone to connect to non-direct-coupled toilet
pans fits this size pipe.
Most plastic plumbing pipes are 1.5mm wall, so that 32mm pipe is 35mm
od, 40mm pipe is 43mm od, and 38mm od is too small for 40mm
compression fittings and too large for 32mm compression fittings
(marley etc).
So if you need to make connections in 38mm pipe (e.g. where the other
option is a flexible cistern to pan connector), you are stuck. Almost.
I needed a dogleg since the cistern must be offset, and I've heard bad
reports about the flexi pipe (water pressure moves it and connections
become loose).
So I went to get a highlevel flushpipe to use the dogleg from
plumbcenter, which turned out to be crap, with the dogleg being wonky.
However, it also turned out to have a 32mm id / 35mm od pipe that
pushed down with interference fit into the 38mm od pipe so the overall
length could be adjusted. Interesting. That would be fine for a flush
pipe, since its not under much pressure for any length of time.
It also came with an adapter to convert the cistern outlet compression
to a 32mm od flange.
So I will do this: connect 32mm (35mm od) standard pipe into the L
bend (38mm od, 35mm id) flush pipe just by pushing it in with a decent
overlap, connect 32mm pipe at the top using the special flange, and
use an adjustable 32mm connector and the variable length overlap to
get things lined out without pulling on the flush cone or weedy and
rather bending plastic concealed cistern I got.
Phew !
But anyone know of fittings available to fit 38mm o/d pipes ?
Any make of 40mm compression that will seal up to 38mm pipe ?
I am amazed the bodgery required to do such a simple job.
Cheers,
Simon.

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Old November 8th 10, 05:52 PM posted to uk.d-i-y
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First recorded activity by DIYBanter: Aug 2010
Posts: 1,532
Default fun with 38mm od pipe

On Nov 8, 1:36*pm, sm_jamieson wrote:
38mm (1.5 inch) outside diameter pipe is a pipe size that you come
across when dealing with flushpipes. Is it used by anything else ??
And cistern outlets usually have a compression fitting for this size
of pipe, and the flushcone to connect to non-direct-coupled toilet
pans fits this size pipe.
Most plastic plumbing pipes are 1.5mm wall, so that 32mm pipe is 35mm
od, 40mm pipe is 43mm od, and 38mm od is too small for 40mm
compression fittings and too large for 32mm compression fittings
(marley etc).
So if you need to make connections in 38mm pipe (e.g. where the other
option is a flexible cistern to pan connector), you are stuck. Almost.
I needed a dogleg since the cistern must be offset, and I've heard bad
reports about the flexi pipe (water pressure moves it and connections
become loose).
So I went to get a highlevel flushpipe to use the dogleg from
plumbcenter, which turned out to be crap, with the dogleg being wonky.
However, it also turned out to have a 32mm id / 35mm od pipe that
pushed down with interference fit into the 38mm od pipe so the overall
length could be adjusted. Interesting. That would be fine for a flush
pipe, since its not under much pressure for any length of time.
It also came with an adapter to convert the cistern outlet compression
to a 32mm od flange.
So I will do this: connect 32mm (35mm od) standard pipe into the L
bend (38mm od, 35mm id) flush pipe just by pushing it in with a decent
overlap, connect 32mm pipe at the top using the special flange, and
use an adjustable 32mm connector and the variable length overlap to
get things lined out without pulling on the flush cone or weedy and
rather bending plastic concealed cistern I got.
Phew !
But anyone know of fittings available to fit 38mm o/d pipes ?
Any make of 40mm compression that will seal up to 38mm pipe ?
I am amazed the bodgery required to do such a simple job.
Cheers,
Simon.


Just one of the reasons to hate plumbing.

Dont forget the hairdryer & cone option.


NT
  #3   Report Post  
Old November 9th 10, 01:38 PM posted to uk.d-i-y
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First recorded activity by DIYBanter: May 2007
Posts: 17
Default fun with 38mm od pipe

On 08/11/2010 13:36, sm_jamieson wrote:
38mm (1.5 inch) outside diameter pipe is a pipe size that you come
across when dealing with flushpipes. Is it used by anything else ??
And cistern outlets usually have a compression fitting for this size
of pipe, and the flushcone to connect to non-direct-coupled toilet
pans fits this size pipe.
Most plastic plumbing pipes are 1.5mm wall, so that 32mm pipe is 35mm
od, 40mm pipe is 43mm od, and 38mm od is too small for 40mm
compression fittings and too large for 32mm compression fittings
(marley etc).
So if you need to make connections in 38mm pipe (e.g. where the other
option is a flexible cistern to pan connector), you are stuck. Almost.
I needed a dogleg since the cistern must be offset, and I've heard bad
reports about the flexi pipe (water pressure moves it and connections
become loose).
So I went to get a highlevel flushpipe to use the dogleg from
plumbcenter, which turned out to be crap, with the dogleg being wonky.
However, it also turned out to have a 32mm id / 35mm od pipe that
pushed down with interference fit into the 38mm od pipe so the overall
length could be adjusted. Interesting. That would be fine for a flush
pipe, since its not under much pressure for any length of time.
It also came with an adapter to convert the cistern outlet compression
to a 32mm od flange.
So I will do this: connect 32mm (35mm od) standard pipe into the L
bend (38mm od, 35mm id) flush pipe just by pushing it in with a decent
overlap, connect 32mm pipe at the top using the special flange, and
use an adjustable 32mm connector and the variable length overlap to
get things lined out without pulling on the flush cone or weedy and
rather bending plastic concealed cistern I got.
Phew !
But anyone know of fittings available to fit 38mm o/d pipes ?
Any make of 40mm compression that will seal up to 38mm pipe ?
I am amazed the bodgery required to do such a simple job.
Cheers,
Simon.


I was faced with replacing a flush pipe and the connectors at each end.
My local plumbers' merchant sells a straight coupler for this 38mm pipe.
I bought one of those just to get the fitting from one end of it to
connect the flush pipe to the cistern - the syphon actually.
This was part of a cistern saga which is still on going - see my post below?

Frank Stacey

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Old November 9th 10, 02:45 PM posted to uk.d-i-y
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First recorded activity by DIYBanter: Jul 2006
Posts: 2,613
Default fun with 38mm od pipe

On Nov 9, 12:38*pm, Frank Stacey
wrote:
On 08/11/2010 13:36, sm_jamieson wrote:



38mm (1.5 inch) outside diameter pipe is a pipe size that you come
across when dealing with flushpipes. Is it used by anything else ??
And cistern outlets usually have a compression fitting for this size
of pipe, and the flushcone to connect to non-direct-coupled toilet
pans fits this size pipe.
Most plastic plumbing pipes are 1.5mm wall, so that 32mm pipe is 35mm
od, 40mm pipe is 43mm od, and 38mm od is too small for 40mm
compression fittings and too large for 32mm compression fittings
(marley etc).
So if you need to make connections in 38mm pipe (e.g. where the other
option is a flexible cistern to pan connector), you are stuck. Almost.
I needed a dogleg since the cistern must be offset, and I've heard bad
reports about the flexi pipe (water pressure moves it and connections
become loose).
So I went to get a highlevel flushpipe to use the dogleg from
plumbcenter, which turned out to be crap, with the dogleg being wonky.
However, it also turned out to have a 32mm id / 35mm od pipe that
pushed down with interference fit into the 38mm od pipe so the overall
length could be adjusted. Interesting. That would be fine for a flush
pipe, since its not under much pressure for any length of time.
It also came with an adapter to convert the cistern outlet compression
to a 32mm od flange.
So I will do this: connect 32mm (35mm od) standard pipe into the L
bend (38mm od, 35mm id) flush pipe just by pushing it in with a decent
overlap, connect 32mm pipe at the top using the special flange, and
use an adjustable 32mm connector and the variable length overlap to
get things lined out without pulling on the flush cone or weedy and
rather bending plastic concealed cistern I got.
Phew !
But anyone know of fittings available to fit 38mm o/d pipes ?
Any make of 40mm compression that will seal up to 38mm pipe ?
I am amazed the bodgery required to do such a simple job.
Cheers,
Simon.


I was faced with replacing a flush pipe and the connectors at each end.
My local plumbers' merchant sells a straight coupler for this 38mm pipe.
I bought one of those just to get the fitting from one end of it to
connect the flush pipe to the cistern - the syphon actually.
This was part of a cistern saga which is still on going - see my post below?

Frank Stacey


What was the connector like ?
Compression ?
Black rubber tube with jubilee clips ?
Simon.
  #5   Report Post  
Old November 10th 10, 05:21 PM posted to uk.d-i-y
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First recorded activity by DIYBanter: May 2007
Posts: 17
Default fun with 38mm od pipe

On 09/11/2010 13:45, sm_jamieson wrote:
On Nov 9, 12:38 pm, Frank
wrote:
On 08/11/2010 13:36, sm_jamieson wrote:



38mm (1.5 inch) outside diameter pipe is a pipe size that you come
across when dealing with flushpipes. Is it used by anything else ??
And cistern outlets usually have a compression fitting for this size
of pipe, and the flushcone to connect to non-direct-coupled toilet
pans fits this size pipe.
Most plastic plumbing pipes are 1.5mm wall, so that 32mm pipe is 35mm
od, 40mm pipe is 43mm od, and 38mm od is too small for 40mm
compression fittings and too large for 32mm compression fittings
(marley etc).
So if you need to make connections in 38mm pipe (e.g. where the other
option is a flexible cistern to pan connector), you are stuck. Almost.
I needed a dogleg since the cistern must be offset, and I've heard bad
reports about the flexi pipe (water pressure moves it and connections
become loose).
So I went to get a highlevel flushpipe to use the dogleg from
plumbcenter, which turned out to be crap, with the dogleg being wonky.
However, it also turned out to have a 32mm id / 35mm od pipe that
pushed down with interference fit into the 38mm od pipe so the overall
length could be adjusted. Interesting. That would be fine for a flush
pipe, since its not under much pressure for any length of time.
It also came with an adapter to convert the cistern outlet compression
to a 32mm od flange.
So I will do this: connect 32mm (35mm od) standard pipe into the L
bend (38mm od, 35mm id) flush pipe just by pushing it in with a decent
overlap, connect 32mm pipe at the top using the special flange, and
use an adjustable 32mm connector and the variable length overlap to
get things lined out without pulling on the flush cone or weedy and
rather bending plastic concealed cistern I got.
Phew !
But anyone know of fittings available to fit 38mm o/d pipes ?
Any make of 40mm compression that will seal up to 38mm pipe ?
I am amazed the bodgery required to do such a simple job.
Cheers,
Simon.


I was faced with replacing a flush pipe and the connectors at each end.
My local plumbers' merchant sells a straight coupler for this 38mm pipe.
I bought one of those just to get the fitting from one end of it to
connect the flush pipe to the cistern - the syphon actually.
This was part of a cistern saga which is still on going - see my post below?

Frank Stacey


What was the connector like ?
Compression ?
Black rubber tube with jubilee clips ?
Simon.

I got it from Plumb Center. It is described as 1.25" STRAIGHT MULTIFIT
CONNECTOR S28M. Search on the s28m finds it. Don't know why it says
1.25" as it fits flush pipe exactly.
Frank



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Old November 10th 10, 06:30 PM posted to uk.d-i-y
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First recorded activity by DIYBanter: Jul 2006
Posts: 2,613
Default fun with 38mm od pipe

On Nov 10, 4:21*pm, Frank Stacey
wrote:
On 09/11/2010 13:45, sm_jamieson wrote:

On Nov 9, 12:38 pm, Frank
wrote:
On 08/11/2010 13:36, sm_jamieson wrote:


38mm (1.5 inch) outside diameter pipe is a pipe size that you come
across when dealing with flushpipes. Is it used by anything else ??
And cistern outlets usually have a compression fitting for this size
of pipe, and the flushcone to connect to non-direct-coupled toilet
pans fits this size pipe.
Most plastic plumbing pipes are 1.5mm wall, so that 32mm pipe is 35mm
od, 40mm pipe is 43mm od, and 38mm od is too small for 40mm
compression fittings and too large for 32mm compression fittings
(marley etc).
So if you need to make connections in 38mm pipe (e.g. where the other
option is a flexible cistern to pan connector), you are stuck. Almost..
I needed a dogleg since the cistern must be offset, and I've heard bad
reports about the flexi pipe (water pressure moves it and connections
become loose).
So I went to get a highlevel flushpipe to use the dogleg from
plumbcenter, which turned out to be crap, with the dogleg being wonky..
However, it also turned out to have a 32mm id / 35mm od pipe that
pushed down with interference fit into the 38mm od pipe so the overall
length could be adjusted. Interesting. That would be fine for a flush
pipe, since its not under much pressure for any length of time.
It also came with an adapter to convert the cistern outlet compression
to a 32mm od flange.
So I will do this: connect 32mm (35mm od) standard pipe into the L
bend (38mm od, 35mm id) flush pipe just by pushing it in with a decent
overlap, connect 32mm pipe at the top using the special flange, and
use an adjustable 32mm connector and the variable length overlap to
get things lined out without pulling on the flush cone or weedy and
rather bending plastic concealed cistern I got.
Phew !
But anyone know of fittings available to fit 38mm o/d pipes ?
Any make of 40mm compression that will seal up to 38mm pipe ?
I am amazed the bodgery required to do such a simple job.
Cheers,
Simon.


I was faced with replacing a flush pipe and the connectors at each end..
My local plumbers' merchant sells a straight coupler for this 38mm pipe.
I bought one of those just to get the fitting from one end of it to
connect the flush pipe to the cistern - the syphon actually.
This was part of a cistern saga which is still on going - see my post below?


Frank Stacey


What was the connector like ?
Compression ?
Black rubber tube with jubilee clips ?
Simon.


I got it from Plumb Center. It is described as 1.25" STRAIGHT MULTIFIT
CONNECTOR S28M. Search on the s28m finds it. *Don't know why it says
1.25" as it fits flush pipe exactly.
Frank


Are you sure your flush pipe is 38mm od ?
That makes no sense.
1 1/2 and 1 1/4 seems to be just another name for 32 and 40mm, s28m is
macalpines compression fittings.
Maybe they just tighten up further than marley ones.
Simon.
  #7   Report Post  
Old November 10th 10, 06:38 PM posted to uk.d-i-y
external usenet poster
 
First recorded activity by DIYBanter: Jul 2006
Posts: 2,613
Default fun with 38mm od pipe

On Nov 10, 5:30*pm, sm_jamieson wrote:
On Nov 10, 4:21*pm, Frank Stacey
wrote:



On 09/11/2010 13:45, sm_jamieson wrote:


On Nov 9, 12:38 pm, Frank
wrote:
On 08/11/2010 13:36, sm_jamieson wrote:


38mm (1.5 inch) outside diameter pipe is a pipe size that you come
across when dealing with flushpipes. Is it used by anything else ??
And cistern outlets usually have a compression fitting for this size
of pipe, and the flushcone to connect to non-direct-coupled toilet
pans fits this size pipe.
Most plastic plumbing pipes are 1.5mm wall, so that 32mm pipe is 35mm
od, 40mm pipe is 43mm od, and 38mm od is too small for 40mm
compression fittings and too large for 32mm compression fittings
(marley etc).
So if you need to make connections in 38mm pipe (e.g. where the other
option is a flexible cistern to pan connector), you are stuck. Almost.
I needed a dogleg since the cistern must be offset, and I've heard bad
reports about the flexi pipe (water pressure moves it and connections
become loose).
So I went to get a highlevel flushpipe to use the dogleg from
plumbcenter, which turned out to be crap, with the dogleg being wonky.
However, it also turned out to have a 32mm id / 35mm od pipe that
pushed down with interference fit into the 38mm od pipe so the overall
length could be adjusted. Interesting. That would be fine for a flush
pipe, since its not under much pressure for any length of time.
It also came with an adapter to convert the cistern outlet compression
to a 32mm od flange.
So I will do this: connect 32mm (35mm od) standard pipe into the L
bend (38mm od, 35mm id) flush pipe just by pushing it in with a decent
overlap, connect 32mm pipe at the top using the special flange, and
use an adjustable 32mm connector and the variable length overlap to
get things lined out without pulling on the flush cone or weedy and
rather bending plastic concealed cistern I got.
Phew !
But anyone know of fittings available to fit 38mm o/d pipes ?
Any make of 40mm compression that will seal up to 38mm pipe ?
I am amazed the bodgery required to do such a simple job.
Cheers,
Simon.


I was faced with replacing a flush pipe and the connectors at each end.
My local plumbers' merchant sells a straight coupler for this 38mm pipe.
I bought one of those just to get the fitting from one end of it to
connect the flush pipe to the cistern - the syphon actually.
This was part of a cistern saga which is still on going - see my post below?


Frank Stacey


What was the connector like ?
Compression ?
Black rubber tube with jubilee clips ?
Simon.


I got it from Plumb Center. It is described as 1.25" STRAIGHT MULTIFIT
CONNECTOR S28M. Search on the s28m finds it. *Don't know why it says
1.25" as it fits flush pipe exactly.
Frank


Are you sure your flush pipe is 38mm od ?
That makes no sense.
1 1/2 and 1 1/4 seems to be just another name for 32 and 40mm, s28m is
macalpines compression fittings.
Maybe they just tighten up further than marley ones.
Simon.


Sorry, you said 1.25 connector. Maybe you can just force the 38mm od
pipe in. I could not with the marley ones from B&Q.
Simon.


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