Anyone know the i.d. of 50mm plastic waste pipe?

I have googled in vain.

TIA
--
Jim K


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On 4/26/2018 5:25 PM, Jim K wrote:
Anyone know the i.d. of 50mm plastic waste pipe?

I have googled in vain.

TIA

varies

On 26/04/2018 17:25, Jim K wrote:
Anyone know the i.d. of 50mm plastic waste pipe?

50mm *is* the ID. The OD will be 54mm if you have push fit pipe or 56mm
for solvent weld pipe.

--
--

Colin Bignell

"Jimbo GM4DHJ ..." Wrote in message:
On 4/26/2018 5:25 PM, Jim K wrote:
Anyone know the i.d. of 50mm plastic waste pipe?

I have googled in vain.

TIA

varies


Pushfit vs solvent weld?
Material?
Any sound info appreciated....
--
Jim K


----Android NewsGroup Reader----
http://usenet.sinaapp.com/

Nightjar Wrote in message:
On 26/04/2018 17:25, Jim K wrote:
Anyone know the i.d. of 50mm plastic waste pipe?

50mm *is* the ID. The OD will be 54mm if you have push fit pipe or 56mm
for solvent weld pipe.


That's confusing. I thought the convention was that "pipe" is
sized according to its external dimension (hence compatibility
between 15mm pipe of different materials) whilst "tube" was done
on internal diameter.

Have I misunderstood or is the convention not really a convention?

Tim

--

On 26/04/2018 19:56, Tim+ wrote:
Nightjar Wrote in message:
On 26/04/2018 17:25, Jim K wrote:
Anyone know the i.d. of 50mm plastic waste pipe?

50mm *is* the ID. The OD will be 54mm if you have push fit pipe or 56mm
for solvent weld pipe.


That's confusing. I thought the convention was that "pipe" is
sized according to its external dimension (hence compatibility
between 15mm pipe of different materials) whilst "tube" was done
on internal diameter.

The convention falls apart in places. Anyway, "copper pipe" is of course
really "tube"

It's even worse when you mix imperial and metric: as you say, 15mm
(external) tube is interchangeable with 1/2" (internal) pipe - and they
are both copper, both tube (or both pipe if you prefer), but measured
differently!

SteveW

In article ,
Steve Walker wrote:
It's even worse when you mix imperial and metric: as you say, 15mm
(external) tube is interchangeable with 1/2" (internal) pipe - and they
are both copper, both tube (or both pipe if you prefer), but measured
differently!

The OD is not the same. You'll find end feed adaptors on sale.

--
*I can see your point, but I still think you're full of ****.

Dave Plowman London SW
To e-mail, change noise into sound.

On Thu, 26 Apr 2018 20:39:48 +0100, Steve Walker wrote:

On 26/04/2018 19:56, Tim+ wrote:
Nightjar Wrote in message:
On 26/04/2018 17:25, Jim K wrote:
Anyone know the i.d. of 50mm plastic waste pipe?

50mm *is* the ID. The OD will be 54mm if you have push fit pipe or 56mm
for solvent weld pipe.


That's confusing. I thought the convention was that "pipe" is
sized according to its external dimension (hence compatibility
between 15mm pipe of different materials) whilst "tube" was done
on internal diameter.

The convention falls apart in places. Anyway, "copper pipe" is of course
really "tube"

It's even worse when you mix imperial and metric: as you say, 15mm
(external) tube is interchangeable with 1/2" (internal) pipe - and they
are both copper, both tube (or both pipe if you prefer), but measured
differently!

SteveW

Fridge pipe/tube is always OD. Most joints are flair, so OD is crucial.
(Note to self: always remember to put on the back nut /before/ making the
flair, especially in 1"+ pipe!).
--
Peter.
The gods will stay away
whilst religions hold sway

On 26/04/2018 19:56, Tim+ wrote:
Nightjar Wrote in message:
On 26/04/2018 17:25, Jim K wrote:
Anyone know the i.d. of 50mm plastic waste pipe?

50mm *is* the ID. The OD will be 54mm if you have push fit pipe or 56mm
for solvent weld pipe.


That's confusing. I thought the convention was that "pipe" is
sized according to its external dimension (hence compatibility
between 15mm pipe of different materials) whilst "tube" was done
on internal diameter.

Have I misunderstood or is the convention not really a convention?

Traditionally, plumbing was always sized by the bore in inches. It was a
lot easier to calculate flow rates that way. That has changed over the
years, but not in a consistent way. Steel and plastic pressure pipe is
still sized by its bore in inches. Metric copper tube is sized by its OD
in millimetres, although Imperial copper tube had been sized by its bore
in inches. White plastic waste pipe is sized by its bore in millimetres,
while other drainage products are sized by their OD in millimetres.


--
--

Colin Bignell

On 26/04/2018 23:47, Dave Plowman (News) wrote:
In article ,
Steve Walker wrote:
It's even worse when you mix imperial and metric: as you say, 15mm
(external) tube is interchangeable with 1/2" (internal) pipe - and they
are both copper, both tube (or both pipe if you prefer), but measured
differently!

The OD is not the same. You'll find end feed adaptors on sale.

Indeed they are, but many people wouldn't bother going specially to get
one and would just use a compression fitting, for which they are
interchangeable.

SteveW

On 27/04/2018 08:08, PeterC wrote:
On Thu, 26 Apr 2018 20:39:48 +0100, Steve Walker wrote:

On 26/04/2018 19:56, Tim+ wrote:
Nightjar Wrote in message:
On 26/04/2018 17:25, Jim K wrote:
Anyone know the i.d. of 50mm plastic waste pipe?

50mm *is* the ID. The OD will be 54mm if you have push fit pipe or 56mm
for solvent weld pipe.


That's confusing. I thought the convention was that "pipe" is
sized according to its external dimension (hence compatibility
between 15mm pipe of different materials) whilst "tube" was done
on internal diameter.

The convention falls apart in places. Anyway, "copper pipe" is of course
really "tube"

It's even worse when you mix imperial and metric: as you say, 15mm
(external) tube is interchangeable with 1/2" (internal) pipe - and they
are both copper, both tube (or both pipe if you prefer), but measured
differently!

SteveW

Fridge pipe/tube is always OD. Most joints are flair, so OD is crucial.
(Note to self: always remember to put on the back nut /before/ making the
flair, especially in 1"+ pipe!).

If you want a good mistake with tubing: a colleague of mine thought
(wrongly) that we needed some tubing for part of a temporary test set up
and bought some 2" stainless-steel tubing, a couple of 2" Swagelok
elbows and a couple of tees. At the time (mid '90s), an elbow was over
£300 !

SteveW

On Fri, 27 Apr 2018 16:16:56 +0100, Steve Walker wrote:

Fridge pipe/tube is always OD. Most joints are flair, so OD is crucial.
(Note to self: always remember to put on the back nut /before/ making the
flair, especially in 1"+ pipe!).

If you want a good mistake with tubing: a colleague of mine thought
(wrongly) that we needed some tubing for part of a temporary test set up
and bought some 2" stainless-steel tubing, a couple of 2" Swagelok
elbows and a couple of tees. At the time (mid '90s), an elbow was over
£300 !

Ouch! Boss unhappy?
--
Peter.
The gods will stay away
whilst religions hold sway

In article ,
Steve Walker wrote:
On 26/04/2018 23:47, Dave Plowman (News) wrote:
In article ,
Steve Walker wrote:
It's even worse when you mix imperial and metric: as you say, 15mm
(external) tube is interchangeable with 1/2" (internal) pipe - and they
are both copper, both tube (or both pipe if you prefer), but measured
differently!

The OD is not the same. You'll find end feed adaptors on sale.

Indeed they are, but many people wouldn't bother going specially to get
one and would just use a compression fitting, for which they are
interchangeable.

Ok. But i only use compression fittings were nothing else will do. I did
think there were both 15mm and 1/2" olives, though?

--
*Why do we say something is out of whack? What is a whack? *

Dave Plowman London SW
To e-mail, change noise into sound.

On 27/04/2018 17:01, Dave Plowman (News) wrote:
In article ,
Steve Walker wrote:
On 26/04/2018 23:47, Dave Plowman (News) wrote:
In article ,
Steve Walker wrote:
It's even worse when you mix imperial and metric: as you say, 15mm
(external) tube is interchangeable with 1/2" (internal) pipe - and they
are both copper, both tube (or both pipe if you prefer), but measured
differently!

The OD is not the same. You'll find end feed adaptors on sale.

Indeed they are, but many people wouldn't bother going specially to get
one and would just use a compression fitting, for which they are
interchangeable.

Ok. But i only use compression fittings were nothing else will do. I did
think there were both 15mm and 1/2" olives, though?

15mm and 1/2" are close enough not to need it. 22mm and 3/4" need
different olives.

SteveW

On 27/04/2018 16:35, PeterC wrote:
On Fri, 27 Apr 2018 16:16:56 +0100, Steve Walker wrote:

Fridge pipe/tube is always OD. Most joints are flair, so OD is crucial.
(Note to self: always remember to put on the back nut /before/ making the
flair, especially in 1"+ pipe!).

If you want a good mistake with tubing: a colleague of mine thought
(wrongly) that we needed some tubing for part of a temporary test set up
and bought some 2" stainless-steel tubing, a couple of 2" Swagelok
elbows and a couple of tees. At the time (mid '90s), an elbow was over
£300 !

Ouch! Boss unhappy?

A few words were said, but no real problem. It was small potatoes when
testing a £23M project.

SteveW

Steve Walker wrote:

On 27/04/2018 17:01, Dave Plowman (News) wrote:
In article ,
Steve Walker wrote:
On 26/04/2018 23:47, Dave Plowman (News) wrote:
In article ,
Steve Walker wrote:
It's even worse when you mix imperial and metric: as you say, 15mm
(external) tube is interchangeable with 1/2" (internal) pipe - and they
are both copper, both tube (or both pipe if you prefer), but measured
differently!

The OD is not the same. You'll find end feed adaptors on sale.

Indeed they are, but many people wouldn't bother going specially to get
one and would just use a compression fitting, for which they are
interchangeable.

Ok. But i only use compression fittings were nothing else will do. I did
think there were both 15mm and 1/2" olives, though?

15mm and 1/2" are close enough not to need it. 22mm and 3/4" need
different olives.

SteveW

Nonetheless, you can buy them. I've had some 1/2" olives for some
years. And they were sold for metric fittings, not NOS.

--

Roger Hayter

Jim K wrote:

Anyone know the i.d. of 50mm plastic waste pipe?

I have googled in vain.

TIA

I don't know the answer as far as UK 50mm waste is concerned, I suspect
it is ID. But it gets very confusing if you are using Scandinavian 50mm
waste fittings, which don't fit UK 50mm fitings, and are probably 50mm
OD. I'd take a relevant fitting to a big plumbers' merchant.


--

Roger Hayter