| 摘要 |
The invention relates to a water heater apparatus (11) made of plastic material, in particular a pressurised water heater tank, comprising a boiler body (12) made of a thermoplastic polymer material, an insulation (13) arranged externally to said boiler body (12) made of a material which is compatible or made compatible to the material of the boiler body (12), and a shell (14) which is external of the insulation (13), preferably also made of a material which is compatible or made compatible to the material of the boiler body (12).
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