Hi I have a leak on an lpg boiler of the element circled in the pic. What’s this item called and can I change this myself legally. ? Thanks in advance.
If your boiler has a decorative cover and the combustion chamber is fully enclosed then yes, if it isn't then it wouldn't be advised.
Not knowing the boiler make/model then it would be hard to tell you exactly what it is but it does look like a cap attached to a plastic section on the HW side that might easily break.
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