I would imagine they are crimped together, with a rubber sealant at the joint?
John
John
Worcester Heatslave 20/25 oil boiler expansion vessel
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I would imagine they are crimped together, with a rubber sealant at the joint?
John
Not the existing one. It's fully-welded. No crimped joints anywhere.
I wonder if they fill both chambers with water, then quickly seam weld it?
John
John
The most common fault encountered on oil combis ( and system boilers) is probably a failed expansion vessel. The internal vessel is rarely above 12 litres which is nowhere near big enough for the systems they are often fitted to when a 25 kilowatt boiler will often be serving a 4 bed detached house.
The fact they are right by the boiler also does not help as it has to contend with the ambient heat it is placed in so the casing is heated from the outside as well as by the water.
The fact they are right by the boiler also does not help as it has to contend with the ambient heat it is placed in so the casing is heated from the outside as well as by the water.
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I wonder if they fill both chambers with water, then quickly seam weld it?
John
Dunno. The welds on mine look like they're done by machine. You'd need air in there to absorb the expansion of whatever was in there because water is incompressible.
Sure, both ends would need to be open and the water to keep things cool.....crimping would be much simpler.
John
John
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