Water meter burst geyser

[JBEAT]

I am from South Africa, yes that water meter have got a build in non return valve. but isn't it the job of the PR Valve to reduce the pressure? and the distant between the water heater and the PR valve sure must also be taken into account for expansion, or do I miss something here?

 

[JBEAT]

The Body corp of the complex asked me to fit the meters and they paid me.

 

[JBEAT]

I would also have fitted it in that order because that is how we always do it, but this housing complex is like a estate, and where the water supply enters every house hold we had no space between the PRV and the point of entry and the PRV had a build in shut down valve which we used to shut down the water to each home

 

[brum]

Hi there what water authority area are you in ..brum

 

[happyflyer]

I think you do miss something are you saying this is an electrical water heater connected straight in the water main with only a NRV and no expansion vessel, if this is so its no wonder it burst, lets have more details please or we will be off on a guessing game

 

[Kev the gas]

brum re post 11, the op is from South Africa.

 

[happyflyer]

The Dragon says "I'm Out"

 

[lame plumber]

think i get the issue now, water meter has a non return valve, as did the prv fitted originally, and the water heater has burst, was the heater relying on expansion within the cold water feed rather than using an expansion vessel and pressure relief valve. Hence the insurance companies get out of jail card if that was the case, seeing as you were the last to fit on an already poorly designed system.

 

[JBEAT]

All the water heaters are installed inside the ceiling, which is far from the water meter
This is what the installation look like

There are 83 meters installed and 1 is to blame????

 

[JBEAT]

Pressure reducing valve regulates how much pressure is available in the line. Water line from the city may have 100 lbs. in it but there is a reducing valve right inside the house so that the pipes in the house only get 40 lbs. in them.