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DE19813156C1
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Double walled connector pipe for fire place to flue
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DE19529010A1
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Secondary air set for house chimneys - comprises a measuring aperture on component(s) of secondary air set etc.
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Firing installation containing fire box, coupling link, and chimney - has closable extra measuring aperture(s) in flue gas inlet section of chimney
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Flow control for secondary air to chimney - has control flap operated automatically over a limited angle, or by electric motor
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Secondary-air device (draught preventer) for house chimneys
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Gas outflow device
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Rigid inner pipe for domestic chimney - is made of strip of special steel resistant to corrosion by gas
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Rigid metal chimney-lining-tube for gas and oil burner flues - consists of helically-flanged pipe of alloy steel sheet inserted vertically
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Smoke stack priming treatment - for damaged masonry /brickwork before relining
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DE1901240A1
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Chimney stack treatment
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