What diameter size pipe is this?

[davidhowkins]

Hi,

Bit of advice please.

I want to replace some existing plastic waste piping with 40mm plastic waste.

I need to connect this to an existing plastic waste of an unknown diameter.

To try and find out the diameter I wrapped a strip of paper around the pipe, measured the circumference and divided by pi (to get the outside diameter).

This gave me a number of 57.32mm for the outside diameter (obviousley my paper strip measurement wasn't EXACTLY right), so my question is can anyone tell me what size the pipe is - I believe I need to know the INSIDE diameter for plastic waste.

Could it be some wierd size or is this close to a standard size?

I want to by a reducing connector to go from the larger pipe down to 40mm and do the rest of the connections in 40mm.

Attaching a pic if it helps!

Rgds

Untitled

• davidhowkins
• 1 Mar 2010
• 1

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[omegaman]

looks like 2"

 

[sambotc]

looks like 2" waste, nothing spectacular, can be had from most merchants.

 

[Biggles..]

2inch terrain (solvent not push fit)

 

[davidhowkins]

Thanks all. The consensus seems to be 2".

I had a quick search online for 2" waste pipe and oddly there was little in the results, the main ones being koi carp centres!

So is 2" common? and will I be able to get a reducer to 40mm?

OR if 2" is tricky to get, will 50mm do??

Thanks

 

[kirkgas]

2" is 50mm, we are just used to talking in old money

 

[neds]

50mm mainly used for Urinals and Vent pipe. Can be used for long runs where 40mm is not wide enough. Go down to B&Q they do 50mm reducers if you get stuck.