Upgrading external pipes for megaflow

[uncleg]

Hi all,

Complete novice here i'm afraid!

I have had a vaillant unistor installed in my property which I have had extended and plan to move in at the end of this month.

Plumber has connected 25mm pipe to external supply through garage.

I have had a quote from Thames Water for approx £1.3k to upgrade external pipe to 25mm up to boundary and then I need to take this into garage. Also they will put me on a metre.

I dug up my driveway as I was getting this done anyway for the trench and then was planning to lay the pipe and get this inspected. Driveway guy burst the pipe and had to call the board. It transpires I am on a shared supply with 4 houses with no mains directly into my property!

Pipe size coming in is 22mm and the presuure is 3 bar. I have checked the flow rate and this is approx 25l/min.

Is is worth me going ahead with this? Cany anyone see the benefit. I do not want to regret this and also I do not want to pay for something I do not need! Yes I will have my own supply (or will I??) and I know that pressure will reduce if all the neighbours have their taps on, but this has not been an issue to date. Am I missing something?

Can someone give me their valued opinion please! So Confused!

Many Thanks

 

[Agile]

You need to measure the dynamic pressure!

Take say 20 li/min and see what pressure remains in the pipe.

Or see what flow rate you can achieve with 1 Bar remaining in the pipe.

Tony

 

[uncleg]

You need to measure the dynamic pressure!

Take say 20 li/min and see what pressure remains in the pipe.

Or see what flow rate you can achieve with 1 Bar remaining in the pipe.

Tony

Thanks Tony for getting back to me.

How would I reduce the pressure to 1 bar to enable me to do this? and what flow rate after should I be looking for once this is done.

Thanks

 

[Agile]

You adjust the flow until the remaining pressure is 1 Bar and then you measure that flow rate.

Tony

 

[simond]

You could cancel the water main and fit an accumulator.

The cost would not be a great deal less installed; but there would be no meter and no adverse effect from the other users on the shared main.

 

[uncleg]

You adjust the flow until the remaining pressure is 1 Bar and then you measure that flow rate.

Tony

Thanks Tony, I will look into this. What flow rate would be acceptable?

Thanks

 

[uncleg]

You could cancel the water main and fit an accumulator.

The cost would not be a great deal less installed; but there would be no meter and no adverse effect from the other users on the shared main.

Thanks for your reply, definitely something to consider if I encounter any issues once I have cancelled TW.

Thanks