Replacing lead pipe.

[A123dhills]

Hello,
I am changing the old lead pipe.Will I get away with 20mm MDPE considering the wall of the lead pipe didn't leave much of an opening.
Thanks,A123dhills.

 

[Stigster]

What is the pipe serving?

 

[ShaunCorbs]

If you can 25mm but as above

 

[Simon F]

the difference in price is minimal.
is there any issue with space?
go 25mm

 

[A123dhills]

the difference in price is minimal.
is there any issue with space?
go 25mm

yes and it looks like the lead pipe that has served well is less than 20mm

 

[Gasmk1]

Old Lead pipe wasn't sized on external diameter so ignore that internally it was about 1/2" or 15mm so I would go with the 25 mm so as no pressure loss.

 

[A123dhills]

Old Lead pipe wasn't sized on external diameter so ignore that internally it was about 1/2" or 15mm so I would go with the 25 mm so as no pressure loss.

Thanks!

 

[Deleted member 96286]

Lead pipe was supplied in 1/2" 3/4" and 1" to domestic properties. There's still a heck of a lot of it around. Being old skool, I still have my original moleskin cloth for solder wiping ball joints, which thankfully have been replaced with Philmacs and Leadloc fittings. Sound advice above is to err on the larger side.

 

[A123dhills]

Cheers.

 

[Gasmk1]

Lead pipe was supplied in 1/2" 3/4" and 1" to domestic properties. There's still a heck of a lot of it around. Being old skool, I still have my original moleskin cloth for solder wiping ball joints, which thankfully have been replaced with Philmacs and Leadloc fittings. Sound advice above is to err on the larger side.

i havent done a wipe joint for about 10 years.

 

[Deleted member 96286]

i havent done a wipe joint for about 10 years.

I did one about 5 years ago when a lad found a bar of Grade D solder and I showed him how to make one. One old skool practice I don't miss, along with lead running cast iron joints.