Is this Expansion Vessel OK ?

[self builder 123]

Hi

Inside our boiler we have this expansion vessel - please see the attached picture.

The flexible hose seems a little bit kinked where it comes off of the boiler.

Would this stop the vessel from working ?

Would the best way to test to see if it is working is to check the pressure when the heating system is running ?

Cheers

Untitled

• self builder 123
• 8 Apr 2010
• 1

 

[mickyg]

its probably not kinked enough to stop it working, but it will be a potential blockage point and yes, if the pressure rises excessively with the heating on there's a problem. Don't recognise the boiler..is it oil?

 

[self builder 123]

Hi

It is an oil fired boiler - a Grant Vortex.

The vessel is precharged to 1 Bar.

When the heating in on the pressure rises to around 1.3 Bar on the built in pressure gauge.

If I place a pressure gauge on the valve of the vessel when the heating is running then I should also read 1.3 Bar.

Is this correct ? This would tell me that the expansion vessel was seeing the increased pressure ?

Cheers

 

[mickyg]

The fact that the heating is only rising 0.3 bar is indication enough that you have adequate expansion so I wouldn't be too concerned. It would only be worth checking the vessel while the system is drained to check the air pressure.

 

[self builder 123]

Cheers - much appreciated.

 

[Boilerman2]

The hose looks perfect to me, and your pressure testing backs this up so no worries

Ricky (Grant Service Agent)