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The boiler relief valve what it does. Why it leaks and how to replace it

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The boiler relief valve or the blow off valve is a safety valve that protects your heating system from building up to much pressure and possibly blowing up.
It's a very important part of your heating system.
Some times the relief valve or blow off valve will leak, and naturally people assume that it is because the relief valve is defective.
Sometimes this is true, and if it is leaking you should replace it even though it is leaking for other reasons.
But it may just be doing it's job. There are 5 reasons a relief valve leaks.

Boiler Relief Valve The First Reason.
Nothing lasts for ever, and a relief valves or blow off valve will go bad. A boiler relief valve needs to be ....
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Boiler Expansion Tank  The second reason:
The expansion tank on a boiler allows the water in the boiler to ....
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Watts 1156 boiler relief valve

The third reason:

The pressure reducing or fill valve for a boiler is ....
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Boilermate with Burnham boiler The Forth Reason
Some boilers have a hot water coil, sometimes called ...Please click here to read the rest and see larger image
Secondary Boiler Aquastat

The fifth reason:

The aquastat or aquastat relay, This is a very important part .......Please click here to read the rest and see larger image

Boiler temperature pressure guage

Boiler gauge settings:

The pressure should be from 12 psi to 18 psi
The Temperature should be between 160 and 180 degrees f. but can be up to 200 degrees f.

To replace a relief valve. ...Please click here to read the rest and see larger image

 Use the Open Dialog Service   See a stuck boiler gauge
Read the front of the boiler relief valve tag
Read the back of the boiler relief valve tag

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