Toilet pipe from cistern to pan size?

George Miles

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Mar 12, 2021, 5:30:36 AM3/12/21

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I'm trying to tidy up plumbing with solvent pipes,
yesterday disconnected cistern
went to town, bought 40mm pipe,
it didnt fit,
went back,
bought 32mm pipe,
that didnt fit...

what is the name and size of the pipe from cistern to pan?
what am i doing wrong?

If I use smaller 32mm somehow
should I raise the cistern to get more flow?

George

noth...@aolbin.com

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Mar 12, 2021, 5:32:58 AM3/12/21

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Search for "flush pipe"

George Miles

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Mar 12, 2021, 5:37:30 AM3/12/21

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38mm or 40mm or 43mm,
do I measure the inside or the outside of the pipe?

And 40mm solvent pipe is different size than 40mm pushfit pipe !

aaaarrrggghhhh

https://www.ecosia.org/search?q=uk+flush+pipe+size&addon=chrome&addonversion=3.2.0&method=topbar

george

ps going to the garden with a spade and bogroll !

Andy Burns

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Mar 12, 2021, 6:11:51 AM3/12/21

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George Miles wrote:

> 38mm or 40mm or 43mm

The one sat in front of me is 50mm OD on the vertical part of the "L"
and 43mm OD on the horizontal part. 45mm and 39mm ID

Dave Plowman (News)

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Mar 12, 2021, 6:15:02 AM3/12/21

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In article <00345fe5-b8bf-4487...@googlegroups.com>,

I recently fitted a new high level cistern to replace the tatty fairly
modern one with a Victorian reproduction - and very pleased with the
results. The new flush pipes were 35mm outside diameter.

--
*I was married by a judge. I should have asked for a jury.

Dave Plowman da...@davenoise.co.uk London SW
To e-mail, change noise into sound.

John Rumm

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Mar 12, 2021, 6:20:17 AM3/12/21

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On 12/03/2021 10:37, George Miles wrote:

> 38mm or 40mm or 43mm,
> do I measure the inside or the outside of the pipe?

Its typically the outside diameter that needs to match.

> And 40mm solvent pipe is different size than 40mm pushfit pipe !

Yup, by design, so you don't try a solvent weld pushfit pipe (wrong type
of plastic)

> aaaarrrggghhhh

Indeed... I keep a stock of both, and a few "universal" compression
fittings so you can transition from one to the other.

--
Cheers,

John.

/=================================================================\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\=================================================================/

Rod Speed

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Mar 12, 2021, 9:49:46 AM3/12/21

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"Andy Burns" <use...@andyburns.uk> wrote in message
news:ib10jk...@mid.individual.net...

You are sposed to sit on the dunny the other way around, silly.

Unknown

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Mar 12, 2021, 11:12:00 AM3/12/21

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George Miles has brought this to us :

> what is the name and size of the pipe from cistern to pan?
> what am i doing wrong?

It's called a 'flush pipe'.

PeterC

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Mar 12, 2021, 12:18:08 PM3/12/21

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On Fri, 12 Mar 2021 11:20:12 +0000, John Rumm wrote:

> On 12/03/2021 10:37, George Miles wrote:
>
>> 38mm or 40mm or 43mm,
>> do I measure the inside or the outside of the pipe?
>
> Its typically the outside diameter that needs to match.
>
>> And 40mm solvent pipe is different size than 40mm pushfit pipe !
>
> Yup, by design, so you don't try a solvent weld pushfit pipe (wrong type
> of plastic)
>
>> aaaarrrggghhhh
>
> Indeed... I keep a stock of both, and a few "universal" compression
> fittings so you can transition from one to the other.

I realised, too late for that job, to use solvent weld in "universal"
fittings. It's resistant to UV (push-fit is PP and isn't resistant) and the
solvent-weld pipe, being the bigger OD, is a tighter fit in compression
fittings.
The comp. system on the washing machine has gone a bit slack - still OK but
won't tighten any more.
--
Peter.
The gods will stay away
whilst religions hold sway

R D S

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Mar 13, 2021, 6:44:59 AM3/13/21

to

On 12/03/2021 11:20, John Rumm wrote:
> On 12/03/2021 10:37, George Miles wrote:
>
>> And 40mm solvent pipe is different size than 40mm pushfit pipe !
>
> Yup, by design, so you don't try a solvent weld pushfit pipe (wrong type
> of plastic)
>
>> aaaarrrggghhhh
>
> Indeed... I keep a stock of both, and a few "universal" compression
> fittings so you can transition from one to the other.
>
>

Buggeration,
Does this mean the 40mm pushfit I have sticking out of the wall from a
sink at work is no good for the boss i've bought for the soil stack?!

Well it's too late now because the new floor isn't coming up! I sense a
bodge coming on.

I see you are supposed to use solvent weld outside, still learning.....

Roger Hayter

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Mar 13, 2021, 7:17:36 AM3/13/21

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You can use a compression coupler/elbow if there's room. If it is visible and
outside it is at least easily replaceable if it leaks.

--
Roger Hayter

John Rumm

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Mar 13, 2021, 10:47:57 AM3/13/21

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On 13/03/2021 11:44, R D S wrote:
> On 12/03/2021 11:20, John Rumm wrote:
>> On 12/03/2021 10:37, George Miles wrote:
>>
>>> And 40mm solvent pipe is different size than 40mm pushfit pipe !
>>
>> Yup, by design, so you don't try a solvent weld pushfit pipe (wrong
>> type of plastic)
>>
>>> aaaarrrggghhhh
>>
>> Indeed... I keep a stock of both, and a few "universal" compression
>> fittings so you can transition from one to the other.
>>
>>
>
> Buggeration,
> Does this mean the 40mm pushfit I have sticking out of the wall from a
> sink at work is no good for the boss i've bought for the soil stack?!

You can get rubber bosses that go on the end of pushfit, and allow it to
plug into a socket on a soil stack connector.

Alternatively you can use a "universal" (i.e. compression) elbow and
convert to solvent weld at that point, then use the plastic weldable
bosses designed for that.

> Well it's too late now because the new floor isn't coming up! I sense a
> bodge coming on.
>
> I see you are supposed to use solvent weld outside, still learning.....

I have used solvent weld outside and its ok. Just make sure you have
adequate pipe clips in place so that it can't thermal cycle and pull apart.