mains water pressure for new combi

[Redhotferrari]

Hi Guys,

Just after some advice/clarification

Customer wants a 42cdi installed for a house with two bathrooms.

Most of the house is a new build extension, so when i went out the only water point was an outside tap that i rigged up for the builder to use during the work.

I measured the pressure and flow rate at the tap, 4/5 Bar and approx 22lpm on the weir gauge. So would assume is all ok?

However confusion has now arisen as a plumber went out before all the work began and measured the pressure, whilst having 3 other outlets running cold water and advised client that he only has 1.2 Bar.

Assuming my measurements and the other guys, do they both 'tie' up based on his having outlets open?

Any problems you can see with the information given?

Cheers in advance

 

[Agile]

The problem seems to be that you measure the static pressure and the open pipe flow rate.

But you dont appear to understand the concept of dynamic flow rate!

Tony

 

[Redhotferrari]

How do i not understand dynamic flow rate then? Read the post again and you will see that the ONLY outlet to the property is one outside tap that has been left live for the builders.

Pretty hard to measure dynamic with no other outlets to open, unless you know something i dont?

 

[Redhotferrari]

No more response then Tony!!