How to Repair a Boiler Gas Leak

Repairing a boiler gas leak is not an easy task, but it is not rocket science, either. It may be best to call a technician, but you can repair some problems yourself. To make their task easier, read on to learn what may cause the gas leak and how you will have to fix it.


Identifying the Source of the Gas Leak

It is very important to first identify what exactly is causing the gas leak in a boiler. Well, it could be a faulty pump (circulator). In some cases it could also be because of a faulty pressure relief valve. Sometimes the gas leak may be caused by the leaking pipe connection also. All these problems can be taken care of easily by the owners themselves.

Tackling a Faulty Circulator

In case the circulator is faulty and is leaking, it would be best to replace the seal of the pump.

Tackling a Faulty Pressure Relief Valve

The pressure relief valve may be leaking because of an excess of water in the system expansion tank. Once the extra water is removed all sort of leaks are automatically taken care of.

Leaky Pressure Relief Valve

In case, the pressure relief valve is leaking and the expansion tank does not have any extra water then the problem may be a leakage in the valve itself, caused by any sediment deposits.

Checking for a Leak in the Valve

The boiler has to be turned off and should be cooled down. The manual pressure relief lever has to be then lifted and some water has to be discharged for a total of 3 seconds. Now the lever should be placed back. The water discharge should be strong, without any gas leaks. In case the valve still shows a gas leakage then the sediments might still be trapped inside the valve.

Removing the Sediments

If the sediments are visible and are in an easy reach, they should be removed then and there. In case, they are deposited deeply inside the valve, valve should be opened again and should be discharged a second time.


Checking for Any Remaining Sediments

In case there are some more sediments inside the pressure relief valve, they can easily be identified as the pressure relief valve will not close at all. This means that the sediments are deposited deep inside and can not be cleaned out.

Replacing the Pressure Relief Valve

In case, there still is a suspicion of some sediments deposits inside the valve, then it is advised that the pressure relief valve should be removed and replaced immediately.

No Water / Gas Discharge

In case there is no water/gas discharge from the pressure relief valve it may also mean that the valve is beyond repair.

Replacing the Valve

A valve with no water/gas discharge should immediately be replaced without thinking twice about it.

Faulty Pipe

In some cases the cause of the gas leak is a faulty pipe. Track the pipe to find the exact point of the gas leak.

Repairing the Pipe

Once the source of the leak is identified it has to be repaired by simply using an industrial strength adhesive that covers the leak.