Lead main to Alkathene

[Marka1411]

Evenings Lads

Just want your thoughts on my plan. Im currently doing my house up and have 1/2'' lead main coming in. Eventually i want to renew back to the street in alkathene. For now though I'm planning on cutting the lead where it comes under the floor and connecting onto alkathene and moving my main into the new kitchen. I was planning on using 25mm alkathene but I'm abit concerned about the pressure drop going up in size from the Lead. The run of alkathene will be about 4m long for now until took back to the street.

Do you guys thing i will be ok with 25mm or should i use 20mm alkathene?

Cheers

Mark

 

[Ermintrude]

Use 25mm won't feel it

 

[JCplumb]

I think you should get on to your local water board and ask about the lead replacement scheme.
They might dig up and replace for free, you don't know 'til you ask

 

[Reg Man]

You won't get a pressure drop by increasing the size.

 

[Marka1411]

Drop in flow rate?

hmm thats interesting i didnt no about that scheme.. I will look into that tonight then and see what its all about.

thanks for the help guys

 

[lame plumber]

MDPE is an improvement on 70s alkathene