Pressure gauge

[Riley26]

Hey is there any solution for a pressure gauge that is stuck on 1 bar no matter if you drain or refill the system. Or does it need a new pressure gauge?

 

[Riley26]

Guessing it could be a blockage on the capillary pipe to the gauge?

 

[Riley26]

Any help?

 

[Terry lambert]

Drain the boiler, take the gauge out and look for blockage where it connected, tap out the end of the gauge?

 

[Riley26]

Thanks what is the best way of draining the boiler thou as I dont like touching the iso valves on the boiler as they can be prone to leaking, pipework to the boiler is fed off a drop

 

[Terry lambert]

Does the boiler have a drain point? You could use the PRV although this may need cleaning or replacing if it doesn't re seal.

Crack a union and use a wet vac? Cut in a self cutting drain cock and then install a compression tee and drain cock after?

 

[45yearsagasman]

Very common and easy to unblock. Depressurise system and drain via boilers drain point. Check your manual to locate it. Remove and clean gauge and its connections.

 

[Riley26]

Thanks are the boiler drain points a bugger for not re-sealing after opened to drain down? Like the boiler iso valves can be

 

[Terry lambert]

Not in my experience

 

[Riley26]

Thanks I will drain by the boiler drain point then, but I don't think I will isolate the flow and return connections to the boiler. These are the ones that have a tendency to leak once used?

 

[bazdaman]

What boiler have you got? On a pressurised system i never touch isolation valves apart from new boilers as when pressure is released an open end wont leak water

 

[Riley26]

Is an old one so I maybe best of not touching them. If I release the pressure via the drain off down stairs. Then remove the gauge should not too much water come out as it will be air locked?

 

[bazdaman]

Y not pay someone to do it, if your asking about draining before fitting then i dont think you should attempt to repair

 

[gigz]

Is the boiler at the highest or lowest point ?

 

[Riley26]

It's on the middle floor of a 3 story house